332354 + Interview Questions in Secondary School in Math

1.	Can anyone solve this and share the pic!51.630×72.421
Answer» ANSWER: *SEE* *the* *attachment* Step-by-step EXPLANATION: *hope* it *helps*

1.

Can anyone solve this and share the pic!51.630×72.421

Answer»

ANSWER:

SEE the attachment

Step-by-step EXPLANATION:

hope it helps

Discussion

2.	The universal set is the set of all integers.If its subsets A, B and C are given by:A = {x : x ≤ -1}B = {. . . , -3, -1, 1, 3, 5, . . .}C = {x : -5 ≤ x < 4}Find:a) A ∪ Bb) A ∩ Bc) C', where C' is the complement of C with respect to ε.d) A ∩ B ∩ C
Answer» ANSWER: djdkckfensnakskckfmfnffn4jdksjsjd Step-by-step EXPLANATION: ccjcjcjfjfdjwoqkqmanxncjcjcnfbsabakxjxncnffnfbs

2.

The universal set is the set of all integers.If its subsets A, B and C are given by:A = {x : x ≤ -1}B = {. . . , -3, -1, 1, 3, 5, . . .}C = {x : -5 ≤ x < 4}Find:a) A ∪ Bb) A ∩ Bc) C', where C' is the complement of C with respect to ε.d) A ∩ B ∩ C

Answer»

ANSWER:

djdkckfensnakskckfmfnffn4jdksjsjd

Step-by-step EXPLANATION:

ccjcjcjfjfdjwoqkqmanxncjcjcnfbsabakxjxncnffnfbs

Discussion

3.	Find the medianclass interval frequency0-1000 2501000-2000 1902000-3000 1003000-4000 404000-5000 155000-6000 5
Answer» $\large\underline{\sf{Solution-}}$ $\begin{gathered}\begin{gathered}\begin{gathered}\boxed{\begin{array}{c\|c\|c}\sf Class\: interval&\sf Frequency\: (f)&\sf \: <klux>CUMULATIVE</klux> \: frequency\\\frac{\qquad \qquad \qquad}{}&\frac{\qquad \qquad}{}\\\sf 0 - <klux>1000</klux>&\sf 250&\sf250\\\\\sf 1000 - 2000 &\sf 190&\sf440\\\\\sf 2000-3000 &\sf 100&\sf540\\\\\sf 3000 - 4000&\sf 40&\sf580\\\\\sf 4000-5000&\sf 15&\sf595\\\\\sf 5000-6000&\sf 5&\sf600\\\frac{\qquad}{}&\frac{\qquad}{}\\\sf & \sf & \end{array}}\end{gathered}\end{gathered}\end{gathered}$ we know that N = 60 and N/2 = 300 The cumulative frequency just greater than 300 is 440 and the corresponding class is 1000 - 2000 Median formula : $\boxed{ \sf M= l + \Bigg \{h \times \dfrac{ \bigg( \dfrac{N}{2} - cf \bigg)}{f} \Bigg \}}$ Here, l denotes lower limit of median class h denotes width of median class f denotes frequency of median class cf denotes cumulative frequency of the class preceding the median class N denotes sum of frequency ACCORDING to the question, median class is 1000 - 2000 so, l = 1000, h = 1000, f = 190, cf = cf of preceding class = 250 N/2 = 300 By substituting all the given values in the formula, $\sf \: \: \: \: M = \: \: 1000 + \bigg(\dfrac{300 - 250}{190} \bigg) \times 1000$ $\sf \: \: \: \: M = \: \: 1000 + \dfrac{5000}{19}$ $\sf \: \: \: \: M = \: \: 1000 + 263.16$ $\sf \: \: \: \: M = \: \: 1263.16$ ─━─━─━─━─━─━─━─━─━─━─━─━─ Additional Information :- Mean :- Using Direct Method $\dashrightarrow\sf Mean = \dfrac{ \sum f_i x_i}{ \sum f_i}$ Using Short Cut Method $\dashrightarrow\sf Mean = \: A \: + \dfrac{ \sum f_i d_i}{ \sum f_i}$ ASSUMED Mean Method :- $\dashrightarrow\sf Mean = \: A \: + \dfrac{ \sum f_i u_i}{ \sum f_i} \times h$

3.

Find the medianclass interval frequency0-1000 2501000-2000 1902000-3000 1003000-4000 404000-5000 155000-6000 5

Answer»

$\large\underline{\sf{Solution-}}$

$\begin{gathered}\begin{gathered}\begin{gathered}\boxed{\begin{array}{c|c|c}\sf Class\: interval&\sf Frequency\: (f)&\sf \: <klux>CUMULATIVE</klux> \: frequency\\\frac{\qquad \qquad \qquad}{}&\frac{\qquad \qquad}{}\\\sf 0 - <klux>1000</klux>&\sf 250&\sf250\\\\\sf 1000 - 2000 &\sf 190&\sf440\\\\\sf 2000-3000 &\sf 100&\sf540\\\\\sf 3000 - 4000&\sf 40&\sf580\\\\\sf 4000-5000&\sf 15&\sf595\\\\\sf 5000-6000&\sf 5&\sf600\\\frac{\qquad}{}&\frac{\qquad}{}\\\sf & \sf & \end{array}}\end{gathered}\end{gathered}\end{gathered}$

we know that

N = 60 and N/2 = 300

The cumulative frequency just greater than 300 is 440 and the corresponding class is 1000 - 2000

Median formula :

$\boxed{ \sf M= l + \Bigg \{h \times \dfrac{ \bigg( \dfrac{N}{2} - cf \bigg)}{f} \Bigg \}}$

Here,

l denotes lower limit of median class

h denotes width of median class

f denotes frequency of median class

cf denotes cumulative frequency of the class preceding the median class

N denotes sum of frequency

ACCORDING to the question,

median class is 1000 - 2000

so,

l = 1000,

h = 1000,

f = 190,

cf = cf of preceding class = 250

N/2 = 300

By substituting all the given values in the formula,

$\sf \: \: \: \: M = \: \: 1000 + \bigg(\dfrac{300 - 250}{190} \bigg) \times 1000$

$\sf \: \: \: \: M = \: \: 1000 + \dfrac{5000}{19}$

$\sf \: \: \: \: M = \: \: 1000 + 263.16$

$\sf \: \: \: \: M = \: \: 1263.16$

─━─━─━─━─━─━─━─━─━─━─━─━─

Additional Information :-

Mean :-

Using Direct Method

$\dashrightarrow\sf Mean = \dfrac{ \sum f_i x_i}{ \sum f_i}$

Using Short Cut Method

$\dashrightarrow\sf Mean = \: A \: + \dfrac{ \sum f_i d_i}{ \sum f_i}$

ASSUMED Mean Method :-

$\dashrightarrow\sf Mean = \: A \: + \dfrac{ \sum f_i u_i}{ \sum f_i} \times h$

Discussion

4.	The object below is made up of identical cubes. Each cube has edges that are 5 feet long.• What is the perimeter of the base of the object? Show all your work and explain your reasoning. Be sure to label your answer with the correct units.• What is the volume of the object in cubic feet? Show all your work and explain your reasoning.
Answer» ANSWER: GOOD MORNING have a GREAT day Step-by-step explanation: 5

4.

The object below is made up of identical cubes. Each cube has edges that are 5 feet long.• What is the perimeter of the base of the object? Show all your work and explain your reasoning. Be sure to label your answer with the correct units.• What is the volume of the object in cubic feet? Show all your work and explain your reasoning.

Answer»

ANSWER:

GOOD MORNING have a GREAT day

Step-by-step explanation:

5

Discussion

5.	The centre of a circle is (2a, a - 7). Using Distance Formula, find thevalues of a if the circle passes through the point (11,-9) and has diameter 10√2 units .
Answer» Answer: By given " " ...(i) [ distance between two points Given that , length of diameter Length of radius Put this value in Eq. (i) , we get SQUARING on both sides , we get " " [by factorisation metghod] HENCE , the REQUIRED values of a are 5 and 3.

5.

The centre of a circle is (2a, a - 7). Using Distance Formula, find thevalues of a if the circle passes through the point (11,-9) and has diameter 10√2 units .

Answer»

Answer:

By given

" " ...(i)
[

distance between two points

Given that , length of diameter

Length of radius

Put this value in Eq. (i) , we get

SQUARING on both sides , we get

" " [by factorisation metghod]

HENCE , the REQUIRED values of a are 5 and 3.

Discussion

6.	Que.7 – What is the probability of choosing a vowel from the alphabet ?i. 1/26 ii. 5/26 iii. 21/26 iv. 1
Answer» 2) 5/26 PLEASE MARK BRAINLIEST

6.

Que.7 – What is the probability of choosing a vowel from the alphabet ?i. 1/26 ii. 5/26 iii. 21/26 iv. 1

Answer»

2) 5/26

PLEASE MARK BRAINLIEST

Discussion

7.	On what principal at the rate of 10%per annum, the difference betweenthe compound interests for 3 yearsand 2 years is * 121.00 ?
Answer» Answer: Let the sum be Rs.100 Computation of compound interest: Prinicpal =Rs.100 R=10% per ANNUM and n=2 years. Amount=Rs. ⎣ ⎢ ⎡ 100×(1+ 100 10 ) 2 ⎦ ⎥ ⎤ =Rs. ⎣ ⎢ ⎡ 100×( 2 11 ) 2 ⎦ ⎥ ⎤ =Rs.121 Computation of simple interest: Prinicpal =Rs.100 R=10% and TIME =2 years. ∴S.I.=Rs.( 100 100×10×2 )=Rs.20 Thus, difference in C.I. and S.I.=Rs.(21−20)=Re.1 Now, if difference between C.I and S.I. is Re.1, Then Sum =Rs.100 If difference between C.I. and S.I. is Rs.500, Then Sum =Rs.(100×500)=Rs.50000

7.

On what principal at the rate of 10%per annum, the difference betweenthe compound interests for 3 yearsand 2 years is * 121.00 ?

Answer»

Answer:

Let the sum be Rs.100

Computation of compound interest:

Prinicpal =Rs.100

R=10% per ANNUM and n=2 years.

Amount=Rs.

⎣

⎢

⎡

100×(1+

100

10

)

2

⎦

⎥

⎤

=Rs.

⎣

⎢

⎡

100×(

2

11

)

2

⎦

⎥

⎤

=Rs.121

Computation of simple interest:

Prinicpal =Rs.100

R=10% and TIME =2 years.

∴S.I.=Rs.(

100

100×10×2

)=Rs.20

Thus, difference in C.I. and S.I.=Rs.(21−20)=Re.1

Now, if difference between C.I and S.I. is Re.1, Then Sum =Rs.100

If difference between C.I. and S.I. is Rs.500, Then Sum =Rs.(100×500)=Rs.50000

Discussion

8.	Ishita paid Rs. 500.26 for shirt and 380.45 for a jeans.If she gave Rs. 1000 to shopkeeper then find how muchmoney she got as return?
Answer» Shirt=500.26 RS Jeans=380.45 Rs She GAVE to SHOPKEEPER=1000 Rs Shopkeeper Gave him=1000Rs-(500.26+380.45) =1000Rs-880.71 =119.29Rs

8.

Ishita paid Rs. 500.26 for shirt and 380.45 for a jeans.If she gave Rs. 1000 to shopkeeper then find how muchmoney she got as return?

Answer»

Shirt=500.26 RS

Jeans=380.45 Rs

She GAVE to SHOPKEEPER=1000 Rs

Shopkeeper Gave him=1000Rs-(500.26+380.45)

=1000Rs-880.71

=119.29Rs

Discussion

9.	दोन समांतर रेषांना एका छेदिकेने छेदल्यावर छेदिकेच्या कोणत्याही एका बाजूला असणारे आंतरकोन एकमेकांचे पूरककोन असतात.
Answer» Answer: Mitochondria are membrane-bound cell organelles (mitochondrion, SINGULAR) that generate most of the CHEMICAL energy needed to power the cell's BIOCHEMICAL reactions. Chemical energy produced by the mitochondria is stored in a SMALL molecule called adenosine triphosphate (ATP).

9.

दोन समांतर रेषांना एका छेदिकेने छेदल्यावर छेदिकेच्या कोणत्याही एका बाजूला असणारे आंतरकोन एकमेकांचे पूरककोन असतात.

Answer»

Answer:

Mitochondria are membrane-bound cell organelles (mitochondrion, SINGULAR) that generate most of the CHEMICAL energy needed to power the cell's BIOCHEMICAL reactions. Chemical energy produced by the mitochondria is stored in a SMALL molecule called adenosine triphosphate (ATP).

Discussion

10.	11. Evaluate :(3sin -2)cosdo.5 -cosO- 4 sinoOr
Answer» Step-by-step explanation: circle touch the X- AXIS at (a,0) and y-axis at (0,a).

10.

11. Evaluate :(3sin -2)cosdo.5 -cosO- 4 sinoOr

Answer»

Step-by-step explanation:

circle touch the X- AXIS at (a,0) and y-axis at (0,a).

Discussion

11.	2) How many matchsticks are requiredto make Z ? Write a rule for makinga pattern of Z using matchsticks
Answer» Answer: 3 matchstics Step-by-step EXPLANATION:

11.

2) How many matchsticks are requiredto make Z ? Write a rule for makinga pattern of Z using matchsticks

Answer»

Answer:

3 matchstics

Step-by-step EXPLANATION:

Discussion

12.	7. If x = 1, y = 2, z = 3, the value of 2x2 + y2 - 22+4 is :(A) 10(B) 1(C) 4(D) 10
Answer» ANSWER: answer is TRULY the same THING with the OPTION B

12.

7. If x = 1, y = 2, z = 3, the value of 2x2 + y2 - 22+4 is :(A) 10(B) 1(C) 4(D) 10

Answer»

ANSWER:

answer is TRULY the same THING with the OPTION B

Discussion

13.	8) The number of boys and girls in a class are in the ratio 4:7 . If the number Of girls is 15 more than the number of boys, finda) Number of boysb) Number of girlsc) Total number.
Answer» I DON'T KNOW!!!!!!!!!!!!!!!

Discussion

14.	1. Construct the following quadrilaterals.(i) quadrilateral LIFTLI = 4 cm(ii) Quadrilateral GOLDOL = 7.5 cmGL = 6 cmGD=6 cmIF = 3 cmTL = 2.5 cmLF= 4.5 cmLD = 5 cmIT=4 cmOD = 10 cm(iii) Rhombus BENDBN= 5.6 cmDE = 6.5 cm
Answer» ANSWER: III) RHOMBUS BEND BN=5.6cm DE=6.5cm

14.

1. Construct the following quadrilaterals.(i) quadrilateral LIFTLI = 4 cm(ii) Quadrilateral GOLDOL = 7.5 cmGL = 6 cmGD=6 cmIF = 3 cmTL = 2.5 cmLF= 4.5 cmLD = 5 cmIT=4 cmOD = 10 cm(iii) Rhombus BENDBN= 5.6 cmDE = 6.5 cm

Answer»

ANSWER:

III) RHOMBUS BEND

BN=5.6cm

DE=6.5cm

Discussion

15.	6P का पिता Q का पुत्र है। M, P के पिता केतरफ का (paternal) अंकल है और N, O काभाई है। N का M से क्या संबंध है?
Answer» ANSWER: DADA N is GRANDFATHER of M

15.

6P का पिता Q का पुत्र है। M, P के पिता केतरफ का (paternal) अंकल है और N, O काभाई है। N का M से क्या संबंध है?

Answer»

ANSWER:

DADA N is GRANDFATHER of M

Discussion

16.	Q.No.20:-Two number are in the ratio of 3:4. If theFirst Number is 150, then find out the SecondNumber.197 x 197 - 103 x 103 197 + 103
Answer» ANSWER: Super Step-by-step EXPLANATION: PLEASE GIVE me braininlist

16.

Q.No.20:-Two number are in the ratio of 3:4. If theFirst Number is 150, then find out the SecondNumber.197 x 197 - 103 x 103 197 + 103

Answer»

ANSWER:

Super

Step-by-step EXPLANATION:

PLEASE GIVE me braininlist

Discussion

17.	What is trigonometry___?⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀koi h -_-" ?
Answer» ANSWER: Trigonometry (from GREEK trigono, triangle and metron,"measure") is a branch of MATHEMATICS that studies RELATIONSHIPS between side LENGTHS and angle of triangle.. I HOPE GOT YOUR ANSWER.......

17.

What is trigonometry___?⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀koi h -_-" ?

Answer»

ANSWER:

Trigonometry (from GREEK trigono, triangle and metron,"measure") is a branch of MATHEMATICS that studies RELATIONSHIPS between side LENGTHS and angle of triangle..

I HOPE GOT YOUR ANSWER.......

Discussion

18.	OTET//151. In triangle ABC, AM is the medianand R is the mid-point of AM, BRand AC intersect each other at S.Which of the following is equal to AS ?وانما تعادل
Answer» Answer: Search mo sa GGLE MATH algebra mas MABILIS masagot don Step-by-step explanation: THANKS me later

18.

OTET//151. In triangle ABC, AM is the medianand R is the mid-point of AM, BRand AC intersect each other at S.Which of the following is equal to AS ?وانما تعادل

Answer»

Answer:

Search mo sa GGLE MATH algebra mas MABILIS masagot don

Step-by-step explanation:

THANKS me later

Discussion

19.	1. Multiple Choice Questions (MCO)1x10=101) What is the identity element for the addition of rational numbers?a) 0b) 1c) - 1d)Which of the following property does this arrangement of number shows?2 x ( x ) = ( x ) × 1 1 1a) Distributiveb) commutative c) closured) AssociativeIf- 4 = then x isa)11b)c) - 30d) 30Which of the following properties describes a trapezium?a) A pair of opposite sides are parallelb) The diagonals are equalC) The diagonals bisects each otherd) The diagonals are perpendicular to each otherv)The sum of the interior angles of a polygon is 540° Find its number of sidesa) 4b) 7d) 3vi)What is the probability of choosing a consonant the word ENGLISH word?3011iv)C) 5d)vii)If the adjacent sides of a rectangle and diagonals are equal then what is the name ofthe polygon?a) Parallelogram b) squarec) Rhombus d) TrapeziumA man bought a box for Rs 250. for how much should he sell it so as to gain 10%?viii)c) 62b) 1819a) Rs. 285b) Rs 275C) ?Rs 257d) Rs. 209ix) If x -+ = 8. then what will be x + 5?a) 66b) 64d) 68The number of 3 cm cubes that can be formed from a metallic cuboid measuring 10cm x 9 cm x 6 cm isa) 10d) 202. Very short answer questions1x10=10Find the HCF of 16x?y? and -8ry?ii) If the cost of 12 books is Rs. 450. then find the cost of 16 books.Value of (7-5) 210 =If 3' = then what is the value of x?Two cubes have volume in the ratio 8 27. Find ratio of the area of the face of one tothat of the other.vi) Find the co-efficient of - x in the (x - 2)(x + 3).vii) Find the upper limit of the interval 90-95.vin) The sum of adjacent angles of a trapezium is 180° (True/False)ix) If + 1 = iş. then what is x?x)181Which one is greater? or
Answer» ANSWER: a Step-by-step EXPLANATION:

19.

1. Multiple Choice Questions (MCO)1x10=101) What is the identity element for the addition of rational numbers?a) 0b) 1c) - 1d)Which of the following property does this arrangement of number shows?2 x ( x ) = ( x ) × 1 1 1a) Distributiveb) commutative c) closured) AssociativeIf- 4 = then x isa)11b)c) - 30d) 30Which of the following properties describes a trapezium?a) A pair of opposite sides are parallelb) The diagonals are equalC) The diagonals bisects each otherd) The diagonals are perpendicular to each otherv)The sum of the interior angles of a polygon is 540° Find its number of sidesa) 4b) 7d) 3vi)What is the probability of choosing a consonant the word ENGLISH word?3011iv)C) 5d)vii)If the adjacent sides of a rectangle and diagonals are equal then what is the name ofthe polygon?a) Parallelogram b) squarec) Rhombus d) TrapeziumA man bought a box for Rs 250. for how much should he sell it so as to gain 10%?viii)c) 62b) 1819a) Rs. 285b) Rs 275C) ?Rs 257d) Rs. 209ix) If x -+ = 8. then what will be x + 5?a) 66b) 64d) 68The number of 3 cm cubes that can be formed from a metallic cuboid measuring 10cm x 9 cm x 6 cm isa) 10d) 202. Very short answer questions1x10=10Find the HCF of 16x?y? and -8ry?ii) If the cost of 12 books is Rs. 450. then find the cost of 16 books.Value of (7-5) 210 =If 3' = then what is the value of x?Two cubes have volume in the ratio 8 27. Find ratio of the area of the face of one tothat of the other.vi) Find the co-efficient of - x in the (x - 2)(x + 3).vii) Find the upper limit of the interval 90-95.vin) The sum of adjacent angles of a trapezium is 180° (True/False)ix) If + 1 = iş. then what is x?x)181Which one is greater? or

Answer»

ANSWER:

a

Step-by-step EXPLANATION:

Discussion

20.	Into14. In a rectangle ABCD, ZAOB = 80°, findof aDC Сratiom. If(SPR80°AB(a) ZADO(b) Z DCA
Answer» Answer: (1)ZSDO Step-by-step explanation: z. s I HOPE you are INTERESTED please d. o

20.

Into14. In a rectangle ABCD, ZAOB = 80°, findof aDC Сratiom. If(SPR80°AB(a) ZADO(b) Z DCA

Answer»

Answer:

(1)ZSDO

Step-by-step explanation:

z. s

I HOPE you are INTERESTED please

d. o

Discussion

21.	103. If the ratio of the areas of twotriangles is equal to the ratio of thebases, then what is the ratio of theircorresponding heights?(A) 2:1(B) 1:2(D) 1:1(C) 4:3UCHWORK
Answer» ANSWER: hhhhhdddddd Step-by-step EXPLANATION: iiiiiiiiddddddddkkkkkkkkkk....

21.

103. If the ratio of the areas of twotriangles is equal to the ratio of thebases, then what is the ratio of theircorresponding heights?(A) 2:1(B) 1:2(D) 1:1(C) 4:3UCHWORK

Answer»

ANSWER:

hhhhhdddddd

Step-by-step EXPLANATION:

iiiiiiiiddddddddkkkkkkkkkk....

Discussion

22.	What is largest interval on which function sin^-1x is continuousa)[0,1] b)[-1,0] c)[-1,1] d)(-infinity,+infinity ) which one is correct ?
Answer» what is the largest interval on which function sin¯¹x is continuous ? solution : y = sin¯¹x is inverse trigonometric function. differentiating with RESPECT to x, dy/dx = 1/√(1 - x²) we SEE function will be differentiable in the interval (-1, 1) because there is no point between-1 and 1 where dy/dx is undefined. now we know, if a function is differentiable in (a, b) then function is continuous in [a, b] so function is continuous in [-1, 1] 2ND method : f(x) = sin¯¹x ⇒x = f(y) = siny range of f(y) = domain of f(x) we know, range of siny belongs to [-1, 1] so, domain of f(x) = [-1, 1] now you can apply limits for -1, 1 and 0. you will see, f(-1⁺) = f(-1) f(0¯) = f(0⁺) = f(0) f(1¯) = f(1) so function is continuous between -1 and 1 therefore OPTION (c) is [-1, 1] is correct.

22.

What is largest interval on which function sin^-1x is continuousa)[0,1] b)[-1,0] c)[-1,1] d)(-infinity,+infinity ) which one is correct ?

Answer»

what is the largest interval on which function sin¯¹x is continuous ?

solution : y = sin¯¹x is inverse trigonometric function.

differentiating with RESPECT to x,

dy/dx = 1/√(1 - x²)

we SEE function will be differentiable in the interval (-1, 1) because there is no point between-1 and 1 where dy/dx is undefined.

now we know, if a function is differentiable in (a, b) then function is continuous in [a, b]

so function is continuous in [-1, 1]

2ND method : f(x) = sin¯¹x

⇒x = f(y) = siny

range of f(y) = domain of f(x)

we know, range of siny belongs to [-1, 1]

so, domain of f(x) = [-1, 1]

now you can apply limits for -1, 1 and 0.

you will see, f(-1⁺) = f(-1)

f(0¯) = f(0⁺) = f(0)

f(1¯) = f(1)

so function is continuous between -1 and 1

therefore OPTION (c) is [-1, 1] is correct.

Discussion

23.	A bus moves with a speed of 40 km/ h four 2 hours and speed of 30 km / h for the next 1 hour.Calculate the total distance covered by the bus.
Answer» Answer: 80+30=110KM Step-by-step EXPLANATION:

23.

A bus moves with a speed of 40 km/ h four 2 hours and speed of 30 km / h for the next 1 hour.Calculate the total distance covered by the bus.

Answer»

Answer:

80+30=110KM

Step-by-step EXPLANATION:

Discussion

24.	Divisible by 3,Write the smallest digit and the greatest possible digit in the blank space of ouch of thefollowing numbers so that the numbers formed are divisible by3 4765
Answer» Answer: Pantoprazole is used to treat CERTAIN STOMACH and esophagus PROBLEMS (such as acid reflux). It WORKS by decreasing the amount of acid your stomach makes. This medication relieves symptoms such as heartburn, difficulty SWALLOWING, and persistent cough

24.

Divisible by 3,Write the smallest digit and the greatest possible digit in the blank space of ouch of thefollowing numbers so that the numbers formed are divisible by3 4765

Answer»

Answer:

Pantoprazole is used to treat CERTAIN STOMACH and esophagus PROBLEMS (such as acid reflux). It WORKS by decreasing the amount of acid your stomach makes. This medication relieves symptoms such as heartburn, difficulty SWALLOWING, and persistent cough

Discussion

25.	7) Rs. 559 is divided into a, b and cinsuch a way that 2 x part of a = 3 xpart of b = 4 x part of c, then findthe part of c.(a) Rs. 129 (b) Rs. 559(c) Rs. 42(d) Rs. 43
Answer» ANSWER: OPTION C I THINK not SURE

25.

7) Rs. 559 is divided into a, b and cinsuch a way that 2 x part of a = 3 xpart of b = 4 x part of c, then findthe part of c.(a) Rs. 129 (b) Rs. 559(c) Rs. 42(d) Rs. 43

Answer»

ANSWER:

OPTION C I THINK not SURE

Discussion

26.	The sum of two natural numbers is 21, and sum of their squares is 261.Find the numbers.
Answer» Answer: 15 and 6 are the TWO NATURAL NUMBERS

26.

The sum of two natural numbers is 21, and sum of their squares is 261.Find the numbers.

Answer»

Answer:

15 and 6 are the TWO NATURAL NUMBERS

Discussion

27.	3. CircleMarkTA Choose and write the correct alternative.(1) In the given figureBm 2 ABC = 35°, then marc AXC) =(A) 100(B) 140°(C) 70(D) 175
Answer» ANSWER: 140 is the CORRECT answer of above MENTIONED QUESTION

27.

3. CircleMarkTA Choose and write the correct alternative.(1) In the given figureBm 2 ABC = 35°, then marc AXC) =(A) 100(B) 140°(C) 70(D) 175

Answer»

ANSWER:

140 is the CORRECT answer of above MENTIONED QUESTION

Discussion

28.	А11. In the given figure, DB 1 BC, DE 1 AB andAC I BC.DBEACProve that[CBSE 2008]DEBCREB.С12. A vertical stick of length 7.5 m casts a shadow 5 m long on the groundand at the same time a tower casts a shadow 24 m long. Find the heightof the tower.13. In an isosceles AABC, the base AB isproduced both ways in P and Q such thatAP BQ = AC.Prove that AACP ~ ABCQ.PAB.АAC CB14. In the given figure, 21 = Z2 andBD CEProve that AACB - ADCE.D
Answer» ANSWER: ghvvvvbbbbb Step-by-step EXPLANATION: ryhhhhbbbbvghhh

28.

А11. In the given figure, DB 1 BC, DE 1 AB andAC I BC.DBEACProve that[CBSE 2008]DEBCREB.С12. A vertical stick of length 7.5 m casts a shadow 5 m long on the groundand at the same time a tower casts a shadow 24 m long. Find the heightof the tower.13. In an isosceles AABC, the base AB isproduced both ways in P and Q such thatAP BQ = AC.Prove that AACP ~ ABCQ.PAB.АAC CB14. In the given figure, 21 = Z2 andBD CEProve that AACB - ADCE.D

Answer»

ANSWER:

ghvvvvbbbbb

Step-by-step EXPLANATION:

ryhhhhbbbbvghhh

Discussion

29.	4) The radius of a circle is15cm. The distance ofcentre O from M: theBmidpoint of chord AB isM9 cm. Find the length ofchord AB
Answer» Answer: Refer the FIGURE UPLOADED here. AM + MB = 12 + 12 = 24 cm

29.

4) The radius of a circle is15cm. The distance ofcentre O from M: theBmidpoint of chord AB isM9 cm. Find the length ofchord AB

Answer»

Answer:

Refer the FIGURE UPLOADED here.

AM + MB = 12 + 12 = 24 cm

Discussion

30.	A can finish a piece of work in 42 days. b is 40% more efficient thana. b started working alone and after few days a replaced him. if a could finish the remaining work in 7 days, for how many days b worked ?
Answer» Answer: 25 days Step-by-step explanation: A TAKE 42 days to complete work A 1 DAY work is 1 / 42 A 7 days work 7 / 42 = 1 / 6 remaining work = 1 - 1/ 6 = 5 / 6 B is 40% more efficient than A means B efficiency is 140/ 100 × A efficiency I.e. If A efficiency is 1 so B efficiency is 140/ 100 = 7 / 5 let B takes x days to complete work SO 1 × 42 = 7 / 5 × x x = 30 days so 1 day work of B is 1 / 30 let B worked for y days so 1/30 × y = 5/6 y = 25 days

30.

A can finish a piece of work in 42 days. b is 40% more efficient thana. b started working alone and after few days a replaced him. if a could finish the remaining work in 7 days, for how many days b worked ?

Answer»

Answer:

25 days

Step-by-step explanation:

A TAKE 42 days to complete work

A 1 DAY work is 1 / 42

A 7 days work 7 / 42 = 1 / 6

remaining work = 1 - 1/ 6 = 5 / 6

B is 40% more efficient than A means B efficiency is 140/ 100 × A efficiency

I.e. If A efficiency is 1

so B efficiency is 140/ 100 = 7 / 5

let B takes x days to complete work

SO 1 × 42 = 7 / 5 × x

x = 30 days

so 1 day work of B is 1 / 30

let B worked for y days

so 1/30 × y = 5/6

y = 25 days

Discussion

31.	In a continues series the class where median lies=18 24, the sum of frequencies (N) = 40, theIn a continuous series, the class where median liescumulative frequency of the pre-median class (c.f.) = 19 and the frequency of the median class(f) = 3, calculate the value of median.(2072C]Step by step explanation
Answer» 2) The inward and outward electric flux for a closed SURFACE in UNITS of N-m/C" are 8x10' and 2) The inward and outward electric flux for a closed surface in units of N-m/C" are 8x10' and4x10' Then the total CHARGE inside the surface is 2) The inward and outward electric flux for a closed surface in units of N-m/C" are 8x10' and4x10' Then the total charge inside the surface is(a) 4x10c 2) The inward and outward electric flux for a closed surface in units of N-m/C" are 8x10' and4x10' Then the total charge inside the surface is(a) 4x10c(B) -4x10°c 2) The inward and outward electric flux for a closed surface in units of N-m/C" are 8x10' and4x10' Then the total charge inside the surface is(a) 4x10c(b) -4x10°c(c) 4x10°/£c 2) The inward and outward electric flux for a closed surface in units of N-m/C" are 8x10' and4x10' Then the total charge inside the surface is(a) 4x10c(b) -4x10°c(c) 4x10°/£c(d) -4x10',

31.

In a continues series the class where median lies=18 24, the sum of frequencies (N) = 40, theIn a continuous series, the class where median liescumulative frequency of the pre-median class (c.f.) = 19 and the frequency of the median class(f) = 3, calculate the value of median.(2072C]Step by step explanation

Answer»

2) The inward and outward electric flux for a closed SURFACE in UNITS of N-m/C" are 8x10' and

2) The inward and outward electric flux for a closed surface in units of N-m/C" are 8x10' and4x10' Then the total CHARGE inside the surface is

2) The inward and outward electric flux for a closed surface in units of N-m/C" are 8x10' and4x10' Then the total charge inside the surface is(a) 4x10c

2) The inward and outward electric flux for a closed surface in units of N-m/C" are 8x10' and4x10' Then the total charge inside the surface is(a) 4x10c(B) -4x10°c

2) The inward and outward electric flux for a closed surface in units of N-m/C" are 8x10' and4x10' Then the total charge inside the surface is(a) 4x10c(b) -4x10°c(c) 4x10°/£c

2) The inward and outward electric flux for a closed surface in units of N-m/C" are 8x10' and4x10' Then the total charge inside the surface is(a) 4x10c(b) -4x10°c(c) 4x10°/£c(d) -4x10',

Discussion

32.	EXERCISES1. Three forces acting on a particle are in equilibrium. The anglesand second is 90° and that between the second and third is 121of the forces with diagram
Answer» the ANGLE is 149 deegre sorry for DIAGRAM

32.

EXERCISES1. Three forces acting on a particle are in equilibrium. The anglesand second is 90° and that between the second and third is 121of the forces with diagram

Answer»

the ANGLE is 149 deegre

sorry for DIAGRAM

Discussion

33.	The ratio equivalent to : 5 isplease answer this question i will rate you and mark as the brainliest
Answer» Answer: 5:1 = 10:2,15:3,20:4,25:5

33.

The ratio equivalent to : 5 isplease answer this question i will rate you and mark as the brainliest

Answer»

Answer:

5:1 = 10:2,15:3,20:4,25:5

Discussion

34.	Which operation will not change the value of any nonzero number?aAdding onebAdding zerocDividing by zerodMultiplying by zero
Answer» Answer: B. *ADDING* *zero* Step-by-step explanation: If you add any non zero number to 0, it will not CHANGE its value. For EXAMPLE : 5 is a non zero number, if 0 is added to 5, the answer is still 5

34.

Which operation will not change the value of any nonzero number?aAdding onebAdding zerocDividing by zerodMultiplying by zero

Answer»

Answer:

B. ADDING zero

Step-by-step explanation:

If you add any non zero number to 0, it will not CHANGE its value.

For EXAMPLE : 5 is a non zero number, if 0 is added to 5, the answer is still 5

Discussion

35.	2.केंद्र 0 और त्रिज्या । वाले वृत्त पर बाह्य बिंदु P से खींची गयीं स्पर्श रेखाओं के बीच का कोण 60° हैतो OP की लम्बाई ज्ञात कीजिये ।
Answer» <P>ANSWER: केंद्र 0 और त्रिज्या । वाले वृत्त पर बाह्य बिंदु P से खींची गयीं स्पर्श रेखाओं के बीच का कोण 60° है तो OP की लम्बाई ज्ञात कीजिये । नहीं पता है।

35.

2.केंद्र 0 और त्रिज्या । वाले वृत्त पर बाह्य बिंदु P से खींची गयीं स्पर्श रेखाओं के बीच का कोण 60° हैतो OP की लम्बाई ज्ञात कीजिये ।

Answer»

<P>ANSWER:

केंद्र 0 और त्रिज्या । वाले वृत्त पर बाह्य बिंदु P से खींची गयीं स्पर्श रेखाओं के बीच का कोण 60° है

तो OP की लम्बाई ज्ञात कीजिये । नहीं पता है।

Discussion

36.	In the given figure,arc AB = arc BC and angle BOC = 50°.Find: (i) angle AOB(ii) angle OAC
Answer» Answer: 1) ANGLE AOB = 50° 2) angle OAC = 65° Step-by-step EXPLANATION: PLS FOLLOW kar do : )

36.

In the given figure,arc AB = arc BC and angle BOC = 50°.Find: (i) angle AOB(ii) angle OAC

Answer»

Answer:

1) ANGLE AOB = 50°

2) angle OAC = 65°

Step-by-step EXPLANATION:

PLS FOLLOW kar do : )

Discussion

37.	5. The following data shows the number of students participated in statelevel competitions in different sports of a secondary school. Draw apercentage bar graph to show the data.ClassesVI VII VIII IX XStudents9080 705570Boys7560 804550Girls
Answer» what's that I can't UNDERSTAND

37.

5. The following data shows the number of students participated in statelevel competitions in different sports of a secondary school. Draw apercentage bar graph to show the data.ClassesVI VII VIII IX XStudents9080 705570Boys7560 804550Girls

Answer»

what's that I can't UNDERSTAND

Discussion

38.	The incomes of Ruchi and Rajan are in the ratio 4: 7. If Ruchi earns 16800 per month,how much does Rajan earn per month?
Answer» ANSWER: Ratio of INCOMES of RUCHI and RAJAN is 4:7 Ruchi's income =Rs.16800 Let x be the income of Rajan. Therefore, 7 4 = x 16800 ⇒x= 4 16800×7 =29400

38.

The incomes of Ruchi and Rajan are in the ratio 4: 7. If Ruchi earns 16800 per month,how much does Rajan earn per month?

Answer»

ANSWER:

Ratio of INCOMES of RUCHI and RAJAN is 4:7

Ruchi's income =Rs.16800

Let x be the income of Rajan.

Therefore,

7

4

=

x

16800

⇒x=

4

16800×7

=29400

Discussion

39.	(2) दोन संख्यांची बेरीज 25 असून मोठ्या संख्येच्या दुप्पटीमधून लहान संख्येची तिप्पट वजा केल्यासवजाबाकी सुद्धा 25 येते. तर त्या संख्या शोधा.
Answer» Step-by-step EXPLANATION: hccbbchchchchchchcjfdjdjjdjf

39.

(2) दोन संख्यांची बेरीज 25 असून मोठ्या संख्येच्या दुप्पटीमधून लहान संख्येची तिप्पट वजा केल्यासवजाबाकी सुद्धा 25 येते. तर त्या संख्या शोधा.

Answer»

Step-by-step EXPLANATION:

hccbbchchchchchchcjfdjdjjdjf

Discussion

40.	A wall is 8 m long, 4 m high, and 22 cm thick .How many bricks of length 25 cm. breadth12.5cm, and 8 cm high are needed to build the wall?
Answer» Step-by-step EXPLANATION: X x. xvdvdvvssbbx fbsbbsvdvdvdvdvdvdvdvdvdvvdvdvdvdvdvdvev

40.

A wall is 8 m long, 4 m high, and 22 cm thick .How many bricks of length 25 cm. breadth12.5cm, and 8 cm high are needed to build the wall?

Answer»

Step-by-step EXPLANATION:

X x. xvdvdvvssbbx fbsbbsvdvdvdvdvdvdvdvdvdvvdvdvdvdvdvdvev

Discussion

41.	Determine whether the pairs of numbers given below are co-prime numbers(8) 17.18
Answer» ANSWER: these TWO are not COPRIMES in COPRIME it has only FACTOR

41.

Determine whether the pairs of numbers given below are co-prime numbers(8) 17.18

Answer»

ANSWER:

these TWO are not COPRIMES in COPRIME it has only FACTOR

Discussion

42.	10 Drawcircle of radius. 4 cmfrom a point10cm awayfrom it center contruct the pairof tangents to the circleand Justity it
Answer» ANSWER: I don't KNOW your answer Step-by-step EXPLANATION: SRY BROTHER..

42.

10 Drawcircle of radius. 4 cmfrom a point10cm awayfrom it center contruct the pairof tangents to the circleand Justity it

Answer»

ANSWER:

I don't KNOW your answer

Step-by-step EXPLANATION:

SRY BROTHER..

Discussion

43.	If the mean variable is 10 and the coefficient of variation is 60%. What is the variance of thevariable ?(A) 6 (B) 36(C) 50 (D) 60
Answer» Correct option is D 33.33(NEARLY) We KNOW coefficient of VARIATION C. V. = x ˉ σ x ×100 ∴ 60= x ˉ 20 ×100 ∴ x ˉ =33.33(nearly)

43.

If the mean variable is 10 and the coefficient of variation is 60%. What is the variance of thevariable ?(A) 6 (B) 36(C) 50 (D) 60

Answer»

Correct option is

D

33.33(NEARLY)

We KNOW coefficient of VARIATION C. V. =

x

ˉ

σ

x

×100

∴ 60=

x

ˉ

20

×100 ∴

x

ˉ

=33.33(nearly)

Discussion

44.	Led2MATH ACTIVITY 1Exercise 21. Write in the reverse order the numbers between 580 and 590Date2. Counting in twos, write from 400 to 410,3. Counting in threes, write from 200 to 215.4. Counting in fives, write from 550 to 580.5. Counting in tens, write from 100 to 200,6. Counting in fours, write from 100 to 140. plz give answer
Answer» ANSWER: Counting in twos, write from 400 to 410, 3. Counting in threes, write from 200 to 215. 4. Counting in fives, write from 550 to 580. 5. Counting in tens, write from 100 to 200, 6. Counting in fours, write from 1

44.

Led2MATH ACTIVITY 1Exercise 21. Write in the reverse order the numbers between 580 and 590Date2. Counting in twos, write from 400 to 410,3. Counting in threes, write from 200 to 215.4. Counting in fives, write from 550 to 580.5. Counting in tens, write from 100 to 200,6. Counting in fours, write from 100 to 140. plz give answer

Answer»

ANSWER:

Counting in twos, write from 400 to 410,

3. Counting in threes, write from 200 to 215.

4. Counting in fives, write from 550 to 580.

5. Counting in tens, write from 100 to 200,

6. Counting in fours, write from 1

Discussion

45.	The probability of getting at least one headsals hathat is the probability of choosing a vould from theAB=326
Answer» Answer: 8 7 Probability of getting at LEAST ONE HEAD = 1 − Probability of getting zero heads Probability of getting zero heads = Probability of getting all tails (TTT) = 2 3 1 Probability of getting at least one head 1− 8 1 = 8 7

45.

The probability of getting at least one headsals hathat is the probability of choosing a vould from theAB=326

Answer»

Answer:

8

7

Probability of getting at LEAST ONE HEAD = 1 − Probability of getting zero heads

Probability of getting zero heads = Probability of getting all tails (TTT) =

2

3

1

Probability of getting at least one head 1−

8

1

=

8

7

Discussion

46.	Q. 15 A ring has no zero - divisors ifan only if *O R has identityO cancellation law is valid in ROcancellation law is invalid in RO None of these
Answer» ANSWER: hshhsjdhdghdjvdbdkdgdngsndv Step-by-step EXPLANATION: jdhdghddhhdgdkdhdnkdhdjdhhkdhnxdkdhdhkdhxhndndbvdbdbdbdhhdjfjjfjrjriejbebe

46.

Q. 15 A ring has no zero - divisors ifan only if *O R has identityO cancellation law is valid in ROcancellation law is invalid in RO None of these

Answer»

ANSWER:

hshhsjdhdghdjvdbdkdgdngsndv

Step-by-step EXPLANATION:

jdhdghddhhdgdkdhdnkdhdjdhhkdhnxdkdhdhkdhxhndndbvdbdbdbdhhdjfjjfjrjriejbebe

Discussion

47.	The measure of angle C is 90°. Classify the angle.obtuse anglestraight angleacute angleright angle
Answer» ANSWER: RIGHT triangle Step-by-step EXPLANATION: HOPE it HELPS you..

47.

The measure of angle C is 90°. Classify the angle.obtuse anglestraight angleacute angleright angle

Answer»

ANSWER:

RIGHT triangle

Step-by-step EXPLANATION:

HOPE it HELPS you..

Discussion

48.	6 ഒരു ചതുരത്തിന്റെ ഒരു വികര്‍ണത്തിന്റെ ീളം 10 സെ.മീ. ഒരു വശം 8സെ.മീ. ആയാല്‍ ചതുരം വരയ്ക്കുക
Answer» Given : The LENGTH of the diagonal of a square is 10cm and its side is 8cm. To Find : Draw a square Solution: A square having side 8 CM can not have diagonal 10 cm as its diagonal would be 8√2 cm. So QUESTION data is wrong Take case 1 : its a square with side 8 cm Taking case 2 : its a square with diagonal 10 cm case 1 : Step 1 : Draw a line segment AB = 8 cm Step 2 : Draw a right angle at A on AB using protractor Step 3 : Take a length 8 cm from A on angle drawn in previous step and mark it as D Step 4 : JOIN AD Step 5 : Draw a right angle at B on AB using protractor Step 6 : Take a length 8 cm from B on angle drawn in previous step and mark it as C Step 7 : Join BC Step 8 : Join CD case 2 : Step 1 : Draw a line segment AC = 10 cm Step 2 : Draw XY perpendicular bisector of AC intersecting AC at O Step 3 : Taking O as center and using compass width = 5 cm cut XY at B and D Step 4 : Join AB , BC , CD and AD Learn More: construct a rectangle bear with Be=7cmand br=5cm write step of ... brainly.in/question/18330442 Construct a rectangle one diagonal is 6.6cm and an angle between ... brainly.in/question/13010337

48.

6 ഒരു ചതുരത്തിന്റെ ഒരു വികര്‍ണത്തിന്റെ ീളം 10 സെ.മീ. ഒരു വശം 8സെ.മീ. ആയാല്‍ ചതുരം വരയ്ക്കുക

Answer»

Given : The LENGTH of the diagonal of a square is 10cm and its side is 8cm.

To Find : Draw a square

Solution:

A square having side 8 CM can not have diagonal 10 cm as its diagonal would be 8√2 cm.

So QUESTION data is wrong

Take case 1 : its a square with side 8 cm

Taking case 2 : its a square with diagonal 10 cm

case 1 :

Step 1 : Draw a line segment AB = 8 cm

Step 2 : Draw a right angle at A on AB using protractor

Step 3 : Take a length 8 cm from A on angle drawn in previous step and mark it as D

Step 4 : JOIN AD

Step 5 : Draw a right angle at B on AB using protractor

Step 6 : Take a length 8 cm from B on angle drawn in previous step and mark it as C

Step 7 : Join BC

Step 8 : Join CD

case 2 :

Step 1 : Draw a line segment AC = 10 cm

Step 2 : Draw XY perpendicular bisector of AC intersecting AC at O

Step 3 : Taking O as center and using compass width = 5 cm cut XY at B and D

Step 4 : Join AB , BC , CD and AD

Learn More:

construct a rectangle bear with Be=7cmand br=5cm write step of ...

brainly.in/question/18330442

Construct a rectangle one diagonal is 6.6cm and an angle between ...

brainly.in/question/13010337

Discussion

49.	कन्टाततुत्मा देवाने पंब दिले आहेत, सात्याने तिहार करकाव्यसौदर्यसुखभोप झाली काया।कुठवर वड्या आसरा था काव्यपंक्तीतीलविचारसौदर्यहशरस्परकरा
Answer» ANSWER: please write in ENGLISH then I will be ANSWERED by our experts

49.

कन्टाततुत्मा देवाने पंब दिले आहेत, सात्याने तिहार करकाव्यसौदर्यसुखभोप झाली काया।कुठवर वड्या आसरा था काव्यपंक्तीतीलविचारसौदर्यहशरस्परकरा

Answer»

ANSWER:

please write in ENGLISH then I will be ANSWERED by our experts

Discussion

50.	B. A tree breaks due to storm and the broken partbeads so that the top of the tree touches the groundmaking an angle 30° with it. The distance betweenthe foot of the tree to the point where the toptouches the ground is 8 m. Find the height of the tree
Answer» *13.5* m is the ANSWER ACCORDING to me. Hope it HELPS. MARK me as *brainliest*. Thanks

50.

B. A tree breaks due to storm and the broken partbeads so that the top of the tree touches the groundmaking an angle 30° with it. The distance betweenthe foot of the tree to the point where the toptouches the ground is 8 m. Find the height of the tree

Answer»

13.5 m is the ANSWER ACCORDING to me.

Hope it HELPS.

MARK me as brainliest.

Thanks

Discussion

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Additional Information :-

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8) The number of boys and girls in a class are in the ratio 4:7 . If the number Of girls is 15 more than the number of boys, finda) Number of boysb) Number of girlsc) Total number.​

1. Construct the following quadrilaterals.(i) quadrilateral LIFTLI = 4 cm(ii) Quadrilateral GOLDOL = 7.5 cmGL = 6 cmGD=6 cmIF = 3 cmTL = 2.5 cmLF= 4.5 cmLD = 5 cmIT=4 cmOD = 10 cm(iii) Rhombus BENDBN= 5.6 cmDE = 6.5 cm​

6P का पिता Q का पुत्र है। M, P के पिता केतरफ का (paternal) अंकल है और N, O काभाई है। N का M से क्या संबंध है?​

Q.No.20:-Two number are in the ratio of 3:4. If theFirst Number is 150, then find out the SecondNumber.197 x 197 - 103 x 103 197 + 103​

OTET//151. In triangle ABC, AM is the medianand R is the mid-point of AM, BRand AC intersect each other at S.Which of the following is equal to AS ?وانما تعادل​

Into14. In a rectangle ABCD, ZAOB = 80°, findof aDC Сratiom. If(SPR80°AB(a) ZADO(b) Z DCA​

103. If the ratio of the areas of twotriangles is equal to the ratio of thebases, then what is the ratio of theircorresponding heights?(A) 2:1(B) 1:2(D) 1:1(C) 4:3UCHWORK​

What is largest interval on which function sin^-1x is continuousa)[0,1] b)[-1,0] c)[-1,1] d)(-infinity,+infinity ) which one is correct ?​

A bus moves with a speed of 40 km/ h four 2 hours and speed of 30 km / h for the next 1 hour.Calculate the total distance covered by the bus.​

Divisible by 3,Write the smallest digit and the greatest possible digit in the blank space of ouch of thefollowing numbers so that the numbers formed are divisible by3 4765​

7) Rs. 559 is divided into a, b and cinsuch a way that 2 x part of a = 3 xpart of b = 4 x part of c, then findthe part of c.(a) Rs. 129 (b) Rs. 559(c) Rs. 42(d) Rs. 43​

The sum of two natural numbers is 21, and sum of their squares is 261.Find the numbers.

3. CircleMarkTA Choose and write the correct alternative.(1) In the given figureBm 2 ABC = 35°, then marc AXC) =(A) 100(B) 140°(C) 70(D) 175​

4) The radius of a circle is15cm. The distance ofcentre O from M: theBmidpoint of chord AB isM9 cm. Find the length ofchord AB​

A can finish a piece of work in 42 days. b is 40% more efficient thana. b started working alone and after few days a replaced him. if a could finish the remaining work in 7 days, for how many days b worked ?​

EXERCISES1. Three forces acting on a particle are in equilibrium. The anglesand second is 90° and that between the second and third is 121of the forces with diagram​

The ratio equivalent to : 5 isplease answer this question i will rate you and mark as the brainliest​

Which operation will not change the value of any nonzero number?aAdding onebAdding zerocDividing by zerodMultiplying by zero

In the given figure,arc AB = arc BC and angle BOC = 50°.Find: (i) angle AOB(ii) angle OAC​

5. The following data shows the number of students participated in statelevel competitions in different sports of a secondary school. Draw apercentage bar graph to show the data.ClassesVI VII VIII IX XStudents9080 705570Boys7560 804550Girls​

The incomes of Ruchi and Rajan are in the ratio 4: 7. If Ruchi earns 16800 per month,how much does Rajan earn per month?​

A wall is 8 m long, 4 m high, and 22 cm thick .How many bricks of length 25 cm. breadth12.5cm, and 8 cm high are needed to build the wall?​

Determine whether the pairs of numbers given below are co-prime numbers(8) 17.18​

10 Drawcircle of radius. 4 cmfrom a point10cm awayfrom it center contruct the pairof tangents to the circleand Justity it​

If the mean variable is 10 and the coefficient of variation is 60%. What is the variance of thevariable ?(A) 6 (B) 36(C) 50 (D) 60​

The probability of getting at least one headsals hathat is the probability of choosing a vould from theAB=326​

Q. 15 A ring has no zero - divisors ifan only if *O R has identityO cancellation law is valid in ROcancellation law is invalid in RO None of these​

The measure of angle C is 90°. Classify the angle.obtuse anglestraight angleacute angleright angle

6 ഒരു ചതുരത്തിന്റെ ഒരു വികര്‍ണത്തിന്റെ ീളം 10 സെ.മീ. ഒരു വശം 8സെ.മീ. ആയാല്‍ ചതുരം വരയ്ക്കുക​

B. A tree breaks due to storm and the broken partbeads so that the top of the tree touches the groundmaking an angle 30° with it. The distance betweenthe foot of the tree to the point where the toptouches the ground is 8 m. Find the height of the tree​

Find the medianclass interval frequency0-1000 2501000-2000 1902000-3000 1003000-4000 404000-5000 155000-6000 5

The centre of a circle is (2a, a - 7). Using Distance Formula, find thevalues of a if the circle passes through the point (11,-9) and has diameter 10√2 units .

Que.7 – What is the probability of choosing a vowel from the alphabet ?i. 1/26 ii. 5/26 iii. 21/26 iv. 1

On what principal at the rate of 10%per annum, the difference betweenthe compound interests for 3 yearsand 2 years is * 121.00 ?

Ishita paid Rs. 500.26 for shirt and 380.45 for a jeans.If she gave Rs. 1000 to shopkeeper then find how muchmoney she got as return?

2) How many matchsticks are requiredto make Z ? Write a rule for makinga pattern of Z using matchsticks

7. If x = 1, y = 2, z = 3, the value of 2x2 + y2 - 22+4 is :(A) 10(B) 1(C) 4(D) 10

8) The number of boys and girls in a class are in the ratio 4:7 . If the number Of girls is 15 more than the number of boys, finda) Number of boysb) Number of girlsc) Total number.

1. Construct the following quadrilaterals.(i) quadrilateral LIFTLI = 4 cm(ii) Quadrilateral GOLDOL = 7.5 cmGL = 6 cmGD=6 cmIF = 3 cmTL = 2.5 cmLF= 4.5 cmLD = 5 cmIT=4 cmOD = 10 cm(iii) Rhombus BENDBN= 5.6 cmDE = 6.5 cm

6P का पिता Q का पुत्र है। M, P के पिता केतरफ का (paternal) अंकल है और N, O काभाई है। N का M से क्या संबंध है?

Q.No.20:-Two number are in the ratio of 3:4. If theFirst Number is 150, then find out the SecondNumber.197 x 197 - 103 x 103 197 + 103

OTET//151. In triangle ABC, AM is the medianand R is the mid-point of AM, BRand AC intersect each other at S.Which of the following is equal to AS ?وانما تعادل

Into14. In a rectangle ABCD, ZAOB = 80°, findof aDC Сratiom. If(SPR80°AB(a) ZADO(b) Z DCA

103. If the ratio of the areas of twotriangles is equal to the ratio of thebases, then what is the ratio of theircorresponding heights?(A) 2:1(B) 1:2(D) 1:1(C) 4:3UCHWORK

What is largest interval on which function sin^-1x is continuousa)[0,1] b)[-1,0] c)[-1,1] d)(-infinity,+infinity ) which one is correct ?

A bus moves with a speed of 40 km/ h four 2 hours and speed of 30 km / h for the next 1 hour.Calculate the total distance covered by the bus.

Divisible by 3,Write the smallest digit and the greatest possible digit in the blank space of ouch of thefollowing numbers so that the numbers formed are divisible by3 4765

7) Rs. 559 is divided into a, b and cinsuch a way that 2 x part of a = 3 xpart of b = 4 x part of c, then findthe part of c.(a) Rs. 129 (b) Rs. 559(c) Rs. 42(d) Rs. 43

3. CircleMarkTA Choose and write the correct alternative.(1) In the given figureBm 2 ABC = 35°, then marc AXC) =(A) 100(B) 140°(C) 70(D) 175

4) The radius of a circle is15cm. The distance ofcentre O from M: theBmidpoint of chord AB isM9 cm. Find the length ofchord AB

A can finish a piece of work in 42 days. b is 40% more efficient thana. b started working alone and after few days a replaced him. if a could finish the remaining work in 7 days, for how many days b worked ?

EXERCISES1. Three forces acting on a particle are in equilibrium. The anglesand second is 90° and that between the second and third is 121of the forces with diagram

The ratio equivalent to : 5 isplease answer this question i will rate you and mark as the brainliest

In the given figure,arc AB = arc BC and angle BOC = 50°.Find: (i) angle AOB(ii) angle OAC

5. The following data shows the number of students participated in statelevel competitions in different sports of a secondary school. Draw apercentage bar graph to show the data.ClassesVI VII VIII IX XStudents9080 705570Boys7560 804550Girls

The incomes of Ruchi and Rajan are in the ratio 4: 7. If Ruchi earns 16800 per month,how much does Rajan earn per month?

A wall is 8 m long, 4 m high, and 22 cm thick .How many bricks of length 25 cm. breadth12.5cm, and 8 cm high are needed to build the wall?

Determine whether the pairs of numbers given below are co-prime numbers(8) 17.18

10 Drawcircle of radius. 4 cmfrom a point10cm awayfrom it center contruct the pairof tangents to the circleand Justity it

If the mean variable is 10 and the coefficient of variation is 60%. What is the variance of thevariable ?(A) 6 (B) 36(C) 50 (D) 60

The probability of getting at least one headsals hathat is the probability of choosing a vould from theAB=326

Q. 15 A ring has no zero - divisors ifan only if *O R has identityO cancellation law is valid in ROcancellation law is invalid in RO None of these

6 ഒരു ചതുരത്തിന്റെ ഒരു വികര്‍ണത്തിന്റെ ീളം 10 സെ.മീ. ഒരു വശം 8സെ.മീ. ആയാല്‍ ചതുരം വരയ്ക്കുക

B. A tree breaks due to storm and the broken partbeads so that the top of the tree touches the groundmaking an angle 30° with it. The distance betweenthe foot of the tree to the point where the toptouches the ground is 8 m. Find the height of the tree