332354 + Interview Questions in Secondary School in Math

1.	Hnually17. What sum of money will amount to * 21296 in 3 years at 10% per annum, compoundedoper16. A sum of money amounts to 10240 in 2 years at 63Find the sumannually?18. At what rate per cent per annum will * 4000 amount to 4410 in 2 years when compound
Answer» Answer: EY DG MW me to be in the other DAY and NIGHT I was in the

1.

Hnually17. What sum of money will amount to * 21296 in 3 years at 10% per annum, compoundedoper16. A sum of money amounts to 10240 in 2 years at 63Find the sumannually?18. At what rate per cent per annum will * 4000 amount to 4410 in 2 years when compound

Answer»

Answer:

EY DG MW me to be in the other DAY and NIGHT I was in the

Discussion

2.	Simmi please hor sawaal NA pucch paper chalda haiga distract ho Riha ha mai
Answer» ANSWER: KKK please MARK me as BRAINLIEST

2.

Simmi please hor sawaal NA pucch paper chalda haiga distract ho Riha ha mai

Answer»

ANSWER:

KKK

please MARK me as BRAINLIEST

Discussion

3.	Bulbs are packed in cartons each containing 40 bulbs. Seven hundred cartons were examined for defective bulbs and the results are in the following table:Number of defective bulbs in a carton 0123456more than 6 Frequency 400180484118832One carton was selected at random. What is the probability that it has(i) No defective bulb?(ii) Defective bulbs from 2 to 6?(iii) Defective bulbs less than 4
Answer» ANSWER: DEFECTIVE BULBS from 2 to 6

3.

Bulbs are packed in cartons each containing 40 bulbs. Seven hundred cartons were examined for defective bulbs and the results are in the following table:Number of defective bulbs in a carton 0123456more than 6 Frequency 400180484118832One carton was selected at random. What is the probability that it has(i) No defective bulb?(ii) Defective bulbs from 2 to 6?(iii) Defective bulbs less than 4

Answer»

ANSWER:

DEFECTIVE BULBS from 2 to 6

Discussion

4.	If a,b,c are the side of a triangle 1 pointand a^2 + b^2 = c^2, name thetype of a triangle
Answer» Answer: RIGHT angled traingale SINCE its USING the PYTHAGORUS theory

4.

If a,b,c are the side of a triangle 1 pointand a^2 + b^2 = c^2, name thetype of a triangle

Answer»

Answer:

RIGHT angled traingale SINCE its USING the PYTHAGORUS theory

Discussion

5.	6 Box ColousRodWhiteBlock3.16KOVATO1021CIDDoonto11 =15T = 15= 10To
Answer» ANSWER: Don't KNOW DUDE SORRY.....

5.

6 Box ColousRodWhiteBlock3.16KOVATO1021CIDDoonto11 =15T = 15= 10To

Answer»

ANSWER:

Don't KNOW DUDE SORRY.....

Discussion

6.	PQRS is a cyclic quadrilateral inscribed in a circle if M is a point online segment PR such that PM=QM and QMS is a straight line prove that MS=MR
Answer»

Discussion

7.	Let p= log 10x, q= log10, y and r= log10z. Write the expression log10 ) in terms of p, q and r.
Answer» when the is x−y ⟾ =5 ht ⟾ DIST =S×T ⟾ 100=(x−y)5 ⟾ x−y=20⟶(I) when THE is x+y ⟾ Dit=10 ⟾ t=1 ht ⟾ 100=(x+y)1 ⟾ x+y=100⟶(II) ⟾ x−y=20 ⟾ x+y=100 ⟾ 2x=120 ⟾ x=60

7.

Let p= log 10x, q= log10, y and r= log10z. Write the expression log10 ) in terms of p, q and r.

Answer»

when the is x−y

⟾ =5 ht

⟾ DIST =S×T

⟾ 100=(x−y)5

⟾ x−y=20⟶(I)

when THE is x+y

⟾ Dit=10

⟾ t=1 ht

⟾ 100=(x+y)1

⟾ x+y=100⟶(II)

⟾ x−y=20

⟾ x+y=100

⟾ 2x=120

⟾ x=60

Discussion

8.	6. Simplify:(i) (2-1 - 3-1) = (4-1 + 6-1))
Answer» Step-by-step EXPLANATION: -3=3+5 but -3 ≠ 8 cannot be SIMPLIFIED

8.

6. Simplify:(i) (2-1 - 3-1) = (4-1 + 6-1))

Answer»

Step-by-step EXPLANATION:

-3=3+5

but -3 ≠ 8

cannot be SIMPLIFIED

Discussion

9.	Hii friends plzz thaks my answers. I will also thank ur answers
Answer» ANSWER: OK but please thanks my answer PL good NIGHT be Happy SWEET DREAMS

9.

Hii friends plzz thaks my answers. I will also thank ur answers

Answer»

ANSWER:

OK but please thanks my answer PL

good NIGHT

be Happy

SWEET DREAMS

Discussion

10.	Shilpa buys some pencils at the rate of 15 for 24 and sells them at the rate of 10 for 3 18. Findhis loss or gain %.
Answer» ANSWER: loss Step-by-step explanation: IDK just loss BCOZ i dont thinl so she gainwhat a LOGIC

10.

Shilpa buys some pencils at the rate of 15 for 24 and sells them at the rate of 10 for 3 18. Findhis loss or gain %.

Answer»

ANSWER:

loss

Step-by-step explanation:

IDK just loss BCOZ i dont thinl so she gainwhat a LOGIC

Discussion

11.	Solve the following x + 9 = 49
Answer» $x + 9 = 49 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: x = 49 - 9 \\ \: \: \: \: \: \: x = 40$

11.

Solve the following x + 9 = 49

Answer»

$x + 9 = 49 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: x = 49 - 9 \\ \: \: \: \: \: \: x = 40$

Discussion

12.	Construct a tangent of length 4 cm from an external point of a circles of radius 3 cm.
Answer» Step-by-step explanation: A joint is the part of the body where two or more bones meet to allow MOVEMENT. GENERALLY speaking, the greater the RANGE of movement, the higher the risk of INJURY because the strength of the joint is reduced. The six types of freely MOVABLE joint include ball and socket, saddle, hinge, condyloid, pivot and gliding.

12.

Construct a tangent of length 4 cm from an external point of a circles of radius 3 cm.

Answer»

Step-by-step explanation:

A joint is the part of the body where two or more bones meet to allow MOVEMENT. GENERALLY speaking, the greater the RANGE of movement, the higher the risk of INJURY because the strength of the joint is reduced. The six types of freely MOVABLE joint include ball and socket, saddle, hinge, condyloid, pivot and gliding.

Discussion

13.	Express 729 X 625 inExpotential form
Answer» $= 729 \times 625 \\ = {27}^{2} \times {25}^{2}$

13.

Express 729 X 625 inExpotential form

Answer»

$= 729 \times 625 \\ = {27}^{2} \times {25}^{2}$

Discussion

14.	7degree 30 sec expressed in radian
Answer» ANSWER: REFER to the ATTACHMENT

14.

7degree 30 sec expressed in radian

Answer»

ANSWER:

REFER to the ATTACHMENT

Discussion

15.	How to prove mid point theorem ??
Answer» ANSWER: To verify the mid-point theorem for a triangle. •Theorem : The line SEGMENT connecting the midpoints of TWO SIDES of a triangle is parallel to the third side and is congruent to one HALF of the third side. •Given in the figure A : AP=PB, AQ=QC. To prove: PQ \|\| BC and PQ=1/2 BC. •Plan: To prove ▲ APQ ≅ ▲ QRC.

15.

How to prove mid point theorem ??

Answer»

ANSWER:

To verify the mid-point theorem for a triangle.

•Theorem : The line SEGMENT connecting the midpoints of TWO SIDES of a triangle is parallel to the third side and is congruent to one HALF of the third side.

•Given in the figure A : AP=PB, AQ=QC.

To prove: PQ || BC and PQ=1/2 BC.

•Plan: To prove ▲ APQ ≅ ▲ QRC.

Discussion

16.	If arithmetic mean of a seties is 45 and median is 40 then calculate the value of mode of that series
Answer» If the Arithmetic mean of a series is 45 and the median is 40, then CALCULATE the value of the mode of that series. Step-by-step explanation: ACCORDING to Karl Pearson's empirical relationship, To find the mean, median, and mode, the FORMULA is Mean - Mode = 3(Mean - Median) Given, Mean = 45 Median = 40 Substituting the values, ⇒ 45 - Mode = 3(45 - 40) 45 - Mode = 3(5) 45 - Mode = 15 Mode = 45 -15 Mode = 30 Therefore, the mode of the series is 30.

16.

If arithmetic mean of a seties is 45 and median is 40 then calculate the value of mode of that series

Answer»

If the Arithmetic mean of a series is 45 and the median is 40, then CALCULATE the value of the mode of that series.

Step-by-step explanation:

ACCORDING to Karl Pearson's empirical relationship,

To find the mean, median, and mode, the FORMULA is

Mean - Mode = 3(Mean - Median)

Given, Mean = 45

Median = 40

Substituting the values,

⇒ 45 - Mode = 3(45 - 40)

45 - Mode = 3(5)

45 - Mode = 15

Mode = 45 -15

Mode = 30

Therefore, the mode of the series is 30.

Discussion

17.	Evaluate:⠀
Answer» ${\underline{\underline{\frak{To\;Evaluate \;:}}}}\\ \\$ $\sf \dfrac {tan^{2} 60 \degree + sin^{2} 45 \degree + 3 \: sec^{2} 30 \degree + 5 \: cos^{2} 90 \degree}{cosec \: 30 \degree + sec \: 60 \degree - cot^{2}30\degree }$ ⠀⠀ ${\underline{\underline{\frak{Solution\;:}}}}\\ \\$ $:\implies\sf \dfrac{tan^{2} 60 \degree + sin^{2} 45 \degree + 3 \: sec^{2} 30 \degree + 5 \: cos^{2} 90 \degree}{cosec \: 30 \degree + sec \: 60 \degree - cot^{2}30 \degree } \\ \\$ $:\implies\sf \dfrac{ \bigg(\sqrt{3}\bigg)^{2} + 4 \times \bigg(\dfrac{1}{ \sqrt{2} }\bigg)^{2} + 3 \times \bigg(\dfrac{2}{ \sqrt{3} }\bigg)^{2} + 5 \times \bigg(0\bigg)^{2}}{2 + 2 - \bigg(\sqrt{3}\bigg)^{2} }\\ \\$ $:\implies\sf {\dfrac{3 + 4 \times {}^{1}\!/{}_{2} + 3 \times {}^{4}\!/{}_{3} + 5 \times 0 }{4 - 3}}\\ \\$ $:\implies\sf { \dfrac{3 + 2 + 4 + 0}{1} }\\ \\$ $:\implies\sf 9\\ \\$ $\qquad\qquad\qquad{\underline{\underline{\sf{\pink{So,\;Done!}}}}}$ ⠀⠀⠀━━━━━━━━━━━━━━━━━━━━━━━━━━━━ $\qquad\qquad\qquad\boxed{\underline{\underline{\purple{\bigstar \: \bf\: More\:to\:know\:\bigstar}}}} \\ \\$ $\begin{array}{ \|c \|c\|c\|c\|c\|c\|} \bf\angle A & \bf{0}^{ \circ} & \bf{30}^{ \circ} & \bf{45}^{ \circ} & \bf{60}^{ \circ} & \bf{90}^{ \circ} \\ \\ \rm sin A & 0 & \dfrac{1}{2}& \dfrac{1}{ \sqrt{2} } & \dfrac{ \sqrt{3} }{2} &1 \\ \\ \rm cos \: A & 1 & \dfrac{ \sqrt{3} }{2}& \dfrac{1}{ \sqrt{2} } & \dfrac{1}{2} &0 \\ \\ \rm tan A & 0 & \dfrac{1}{ \sqrt{3} }& 1 & \sqrt{3} & \rm Not \: De fined \\ \\ \rm cosec A & \rm Not \: De fined & 2& \sqrt{2} & \dfrac{2}{ \sqrt{3} } &1 \\ \\ \rm sec A & 1 & \dfrac{2}{ \sqrt{3} }& \sqrt{2} & 2 & \rm Not \: De fined \\ \\ \rm cot A & \rm Not \: De fined & \sqrt{3} & 1 & \dfrac{1}{ \sqrt{3} } & 0 \end{array}$

17.

Evaluate:⠀

Answer»

${\underline{\underline{\frak{To\;Evaluate \;:}}}}\\ \\$

$\sf \dfrac {tan^{2} 60 \degree + sin^{2} 45 \degree + 3 \: sec^{2} 30 \degree + 5 \: cos^{2} 90 \degree}{cosec \: 30 \degree + sec \: 60 \degree - cot^{2}30\degree }$

⠀⠀

${\underline{\underline{\frak{Solution\;:}}}}\\ \\$

$:\implies\sf \dfrac{tan^{2} 60 \degree + sin^{2} 45 \degree + 3 \: sec^{2} 30 \degree + 5 \: cos^{2} 90 \degree}{cosec \: 30 \degree + sec \: 60 \degree - cot^{2}30 \degree } \\ \\$

$:\implies\sf \dfrac{ \bigg(\sqrt{3}\bigg)^{2} + 4 \times \bigg(\dfrac{1}{ \sqrt{2} }\bigg)^{2} + 3 \times \bigg(\dfrac{2}{ \sqrt{3} }\bigg)^{2} + 5 \times \bigg(0\bigg)^{2}}{2 + 2 - \bigg(\sqrt{3}\bigg)^{2} }\\ \\$

$:\implies\sf {\dfrac{3 + 4 \times {}^{1}\!/{}_{2} + 3 \times {}^{4}\!/{}_{3} + 5 \times 0 }{4 - 3}}\\ \\$

$:\implies\sf { \dfrac{3 + 2 + 4 + 0}{1} }\\ \\$

$:\implies\sf 9\\ \\$

$\qquad\qquad\qquad{\underline{\underline{\sf{\pink{So,\;Done!}}}}}$

⠀⠀⠀━━━━━━━━━━━━━━━━━━━━━━━━━━━━

$\qquad\qquad\qquad\boxed{\underline{\underline{\purple{\bigstar \: \bf\: More\:to\:know\:\bigstar}}}} \\ \\$

$\begin{array}{ |c |c|c|c|c|c|} \bf\angle A & \bf{0}^{ \circ} & \bf{30}^{ \circ} & \bf{45}^{ \circ} & \bf{60}^{ \circ} & \bf{90}^{ \circ} \\ \\ \rm sin A & 0 & \dfrac{1}{2}& \dfrac{1}{ \sqrt{2} } & \dfrac{ \sqrt{3} }{2} &1 \\ \\ \rm cos \: A & 1 & \dfrac{ \sqrt{3} }{2}& \dfrac{1}{ \sqrt{2} } & \dfrac{1}{2} &0 \\ \\ \rm tan A & 0 & \dfrac{1}{ \sqrt{3} }& 1 & \sqrt{3} & \rm Not \: De fined \\ \\ \rm cosec A & \rm Not \: De fined & 2& \sqrt{2} & \dfrac{2}{ \sqrt{3} } &1 \\ \\ \rm sec A & 1 & \dfrac{2}{ \sqrt{3} }& \sqrt{2} & 2 & \rm Not \: De fined \\ \\ \rm cot A & \rm Not \: De fined & \sqrt{3} & 1 & \dfrac{1}{ \sqrt{3} } & 0 \end{array}$

Discussion

18.	SITUATION : There are 125 passengers in the first carriageL:150 passengers in the second carriage and 175 passengersin the third crriage and so on an third carriage and soon in an arithmetic sequence.izo words onwords on the of: What's the tatal number of passengers in the firest7 carriages?Solution: The sequence is 125, 150, 175...briken:oo briven :-ar=125, a 2 = 150, a3 = 175S7=?an=125+ [h-1] 25 a7= 125 +1-1) 285We can use the formula:= 1400 Carriage 1st 2nd 3rdfirst ? carriageNumbres of Passengers 125 150 175 -2nd 3rd ... 7thл
Answer» ANSWER: hurtj hdegj wwtuk☹

18.

SITUATION : There are 125 passengers in the first carriageL:150 passengers in the second carriage and 175 passengersin the third crriage and so on an third carriage and soon in an arithmetic sequence.izo words onwords on the of: What's the tatal number of passengers in the firest7 carriages?Solution: The sequence is 125, 150, 175...briken:oo briven :-ar=125, a 2 = 150, a3 = 175S7=?an=125+ [h-1] 25 a7= 125 +1-1) 285We can use the formula:= 1400 Carriage 1st 2nd 3rdfirst ? carriageNumbres of Passengers 125 150 175 -2nd 3rd ... 7thл

Answer»

ANSWER:

hurtj hdegj wwtuk☹

Discussion

19.	XIV. Find median of 15, 40, 25, 16, 28, 32, 36,42, 16, 10, 28a) 28b) 9d) 28.5
Answer» Step-by-step EXPLANATION: (a) = 28......................

19.

XIV. Find median of 15, 40, 25, 16, 28, 32, 36,42, 16, 10, 28a) 28b) 9d) 28.5

Answer»

Step-by-step EXPLANATION:

(a) = 28......................

Discussion

20.	Represent -2/11, -5/11-9/11 om the number line
Answer» ANSWER: -16/11 Step-by-step EXPLANATION: the 11 is the lcm then numerator will be added

20.

Represent -2/11, -5/11-9/11 om the number line

Answer»

ANSWER:

-16/11

Step-by-step EXPLANATION:

the 11 is the lcm then numerator will be added

Discussion

21.	All questions are compulsory. Inc1) State whether the function f(x)=x" from RoR is one-one or many one.
Answer» ANSWER: where is QUESTION dearrrrrrrrrrr

21.

All questions are compulsory. Inc1) State whether the function f(x)=x" from RoR is one-one or many one.

Answer»

ANSWER:

where is QUESTION dearrrrrrrrrrr

Discussion

22.	Q2) the cost of 12 quintal soyabean is 36000 rupees howmuch will 1 quintal cost ?
Answer» Answer: 3000 RUPEES Step-by-step explanation: 1 QUINTAL soyabean cost = 36000/12 3000 plz feedback ke ROOP me 5 ka rating dedo

22.

Q2) the cost of 12 quintal soyabean is 36000 rupees howmuch will 1 quintal cost ?

Answer»

Answer:

3000 RUPEES

Step-by-step explanation:

1 QUINTAL soyabean cost = 36000/12

3000

plz feedback ke ROOP me 5 ka rating dedo

Discussion

23.	Areaisof a traingle having sides 3cm, 4m, 5cm.cm²
Answer» ANSWER: 50cm² is UR answer so MARK me as WELL as BRAINLIST

23.

Areaisof a traingle having sides 3cm, 4m, 5cm.cm²

Answer»

ANSWER:

50cm²

is UR answer so MARK me as WELL as BRAINLIST

Discussion

24.	एक घन का आयतन 216 cm हो तो घन का किनारा क्या होगा?a)25b)100c)150d)125
Answer» ANSWER: Step-by-step explanation: 150

24.

एक घन का आयतन 216 cm हो तो घन का किनारा क्या होगा?a)25b)100c)150d)125

Answer»

ANSWER:

Step-by-step explanation:

150

Discussion

25.	12. The braking distance of a vehicle is directlyproportional to the square of its speed. When thespeed of the vehicle is b m/s, its braking distanceis d m. If the speed of the vehicle is increasedby 200%, find the percentage increase in itsbraking distance
Answer» ANSWER: htyugrguirffe5tvcetgvvhu 400%

25.

12. The braking distance of a vehicle is directlyproportional to the square of its speed. When thespeed of the vehicle is b m/s, its braking distanceis d m. If the speed of the vehicle is increasedby 200%, find the percentage increase in itsbraking distance

Answer»

ANSWER:

htyugrguirffe5tvcetgvvhu

400%

Discussion

26.	What is the value of x from the given figure SOCIAL SCIENCEin which O is the center of the circle?40°OxB CA(A) 50° (B) 45°(C) 60° (D) 55°
Answer» Answer: C because 0 is only ONE factor 60

26.

What is the value of x from the given figure SOCIAL SCIENCEin which O is the center of the circle?40°OxB CA(A) 50° (B) 45°(C) 60° (D) 55°

Answer»

Answer:

C because 0 is only ONE factor 60

Discussion

27.	Every factor of a number is not an exact divisor of the number
Answer» Answer: Property 3 Every factors of a number is an EXACT is an exact divisor of that number. property 4 Every factor of a number is less than or equal to the number. property 5 Factor of a given number are finite. hope it help U.

27.

Every factor of a number is not an exact divisor of the number

Answer»

Answer:

Property 3 Every factors of a number is an EXACT is an exact divisor of that number. property 4 Every factor of a number is less than or equal to the number. property 5 Factor of a given number are finite.

hope it help U.

Discussion

28.	If the plane ar — by + cz = d contains the linetay2dthen the value of6.4dis equal to (b, d70)
Answer» ANSWER: hgwhfeugsgjsjkhdch we............

28.

If the plane ar — by + cz = d contains the linetay2dthen the value of6.4dis equal to (b, d70)

Answer»

ANSWER:

hgwhfeugsgjsjkhdch

we............

Discussion

29.	The sum of first n terms of an AP is oppation (1). S=n/2{2a+(n+1)d}. (2). S=a+(n-1)d. (3). S=n{2a+(n-1)d} (4) . S=n/2{2a+(n-1)d}
Answer» Answer: Option 4: $S = \frac{<klux>N</klux>}{2}[2a + (n - 1)d]$ Step-by-step EXPLANATION: Let's assume that, the ARITHMETIC Progression is: a, (a + d), (a + 2d), (a + 3d), . . . . . . . . . The nth term = a + (n - 1)d . . . . . . . . . . . . . (i) If the sum of first n terms = S, then, S = a + (a+d) + (a+2d) + . . . . . . . . . + [a+(n-3)d]+[a+(n-2)d]+[a+(n-1)d] S =[a+(n-1)d]+[a+(n-2)d]+[a+(n-3)d] + . . . . . . . . . + (a+2d) + (a+d) + a Adding up the above two equations: 2S=[2a+(n-1)d]+[2a+(n-1)d]+[2a+(n-1)d]+ . . . . +[2a+(n-1)d]+[2a+(n-1)d]+[2a+(n-1)d] => 2S = n.[(2a) + (n-1)d] = 2an + n(n - 1)d ∴ $S = \frac{1}{2}[2an + n(n - 1)d]$ $= \frac{n}{2}[2a + (n - 1)d]$ Option 4 is the correct answer.

29.

The sum of first n terms of an AP is oppation (1). S=n/2{2a+(n+1)d}. (2). S=a+(n-1)d. (3). S=n{2a+(n-1)d} (4) . S=n/2{2a+(n-1)d}

Answer»

Answer:

Option 4:

$S = \frac{<klux>N</klux>}{2}[2a + (n - 1)d]$

Step-by-step EXPLANATION:

Let's assume that, the ARITHMETIC Progression is:

a, (a + d), (a + 2d), (a + 3d), . . . . . . . . .

The nth term = a + (n - 1)d . . . . . . . . . . . . . (i)

If the sum of first n terms = S, then,

S = a + (a+d) + (a+2d) + . . . . . . . . . + [a+(n-3)d]+[a+(n-2)d]+[a+(n-1)d]

S =[a+(n-1)d]+[a+(n-2)d]+[a+(n-3)d] + . . . . . . . . . + (a+2d) + (a+d) + a

Adding up the above two equations:

2S=[2a+(n-1)d]+[2a+(n-1)d]+[2a+(n-1)d]+ . . . . +[2a+(n-1)d]+[2a+(n-1)d]+[2a+(n-1)d]

=> 2S = n.[(2a) + (n-1)d] = 2an + n(n - 1)d

∴ $S = \frac{1}{2}[2an + n(n - 1)d]$ $= \frac{n}{2}[2a + (n - 1)d]$

Option 4 is the correct answer.

Discussion

30.	Bro let's see who can do all 7 sums in a copy. let's see who is Brainliest
Answer» Answer: These questions looks LIKE your question paper. Brainly is a homework APP which is used for CLEARING your doubts and not to do your question paper... *Good* *AFTERNOON* ♥

30.

Bro let's see who can do all 7 sums in a copy. let's see who is Brainliest

Answer»

Answer:

These questions looks LIKE your question paper. Brainly is a homework APP which is used for CLEARING your doubts and not to do your question paper...

Good AFTERNOON ♥

Discussion

31.	.help me fastly please fastly.
Answer» ANSWER: EK to VO fastly NAHI hota only fast hota he ...

31.

.help me fastly please fastly.

Answer»

ANSWER:

EK to VO fastly NAHI hota only fast hota he ...

Discussion

32.	The percentage error in x, y are
Answer» ANSWER: % of X and y are 1/100 OK KO ko ko

32.

The percentage error in x, y are

Answer»

ANSWER:

% of X and y are 1/100 OK KO ko ko

Discussion

33.	Simplifyhint:By rationalising
Answer» ANSWER: NOPE.................. SOLVE then DIVIDE Step-by-step EXPLANATION: mznsjam

33.

Simplifyhint:By rationalising

Answer»

ANSWER:

NOPE.................. SOLVE then DIVIDE

Step-by-step EXPLANATION:

mznsjam

Discussion

34.	A bag Contains 10Red and 6 green Balls and four s successive draws are madewithout replaceemat and with replacement .find the probability that they are alternatively of same Colour.
Answer» Step-by-step EXPLANATION: ◆━━━━━━━▣✦▣━━━━━━━━◆ ➺ COT A=( 2/5 ) ∴ tan A =( 5/2 ) [cosec θ = 1 /sinθ ⟹√(1+tan²θ)/ tanθ] ➺4+4cot²A ➺4 (1+cot²A) ➺4 (cosec²A) ➺4×( √(1+tan²θ)/ tanθ) ➺4×[ √(1+(5/2)²)/ (5/2)] ➺4×[ √(1+(25/4))/ (5/2)] ➺4×[ √( (4+25)/ 4) / (5/2)] ➺4×[ √(29/ 4) / (5/2)] ➺4×[ 1.34 / (5/2)] ➺4×[ 1.34 ×2 / 5] ➺4×[ 2.68 / 5] ➺4×[ 0.536 ] ➺2.144 ◆━━━━━━━▣✦▣━━━━━━━━◆ ☆✿╬ʜᴏᴘᴇ ɪᴛ ʜᴇʟᴘs ᴜ╬✿☆

34.

A bag Contains 10Red and 6 green Balls and four s successive draws are madewithout replaceemat and with replacement .find the probability that they are alternatively of same Colour.

Answer»

Step-by-step EXPLANATION:

◆━━━━━━━▣✦▣━━━━━━━━◆

➺ COT A=( 2/5 )

∴ tan A =( 5/2 )

[cosec θ = 1 /sinθ ⟹√(1+tan²θ)/ tanθ]

➺4+4cot²A

➺4 (1+cot²A)

➺4 (cosec²A)

➺4×( √(1+tan²θ)/ tanθ)

➺4×[ √(1+(5/2)²)/ (5/2)]

➺4×[ √(1+(25/4))/ (5/2)]

➺4×[ √( (4+25)/ 4) / (5/2)]

➺4×[ √(29/ 4) / (5/2)]

➺4×[ 1.34 / (5/2)]

➺4×[ 1.34 ×2 / 5]

➺4×[ 2.68 / 5]

➺4×[ 0.536 ]

➺2.144

◆━━━━━━━▣✦▣━━━━━━━━◆

☆✿╬ʜᴏᴘᴇ ɪᴛ ʜᴇʟᴘs ᴜ╬✿☆

Discussion

35.	Find the median of the following grouped frequency distribution.C. I. 0-10 10-20 20-30 30-40 40-50 15 20 17 19 8
Answer» Step-by-step EXPLANATION: ANSWER =20......... ......... ....

35.

Find the median of the following grouped frequency distribution.C. I. 0-10 10-20 20-30 30-40 40-50 15 20 17 19 8

Answer»

Step-by-step EXPLANATION:

ANSWER =20......... ......... ....

Discussion

36.	A shopkeeper purchased 1000 electric bulbs at Rs.16 each.100 bulbs weredamaged and he sold the remaining bulbs at 12.5% profit. Find the selling price of each.Step by step.ans:rs 20 each
Answer» Answer: A shopkeeper PURCHASED 1000 ELECTRIC bulbs at Rs.16 each. Cost Price = 161000 = 16,000 100 bulbs were DAMAGED, so remaining for sell, 1000 - 100 = 900 he sold the remaining bulbs at 12.5% profit. SP = 112.5/10016000 = 18000 Find the selling price of each Selling Price of each = 18000/900 = 20

36.

A shopkeeper purchased 1000 electric bulbs at Rs.16 each.100 bulbs weredamaged and he sold the remaining bulbs at 12.5% profit. Find the selling price of each.Step by step.ans:rs 20 each

Answer»

Answer:

A shopkeeper PURCHASED 1000 ELECTRIC bulbs at Rs.16 each.

Cost Price = 16*1000 = 16,000

100 bulbs were DAMAGED, so remaining for sell,

1000 - 100 = 900

he sold the remaining bulbs at 12.5% profit.

SP = 112.5/100*16000 = 18000

Find the selling price of each

Selling Price of each = 18000/900 = 20

Discussion

37.	The sun of any two whole number is a whole number
Answer» True Hence, we say that sum of any two WHOLE numbers is a whole NUMBER i.e. the collection of whole numbers is closed under addition. This property is known as the CLOSURE property for addition of whole numbers. Hope it HELPS youhh✌️✌️❣️❣️❗️❗️

37.

The sun of any two whole number is a whole number

Answer»

True

Hence, we say that sum of any two WHOLE numbers is a whole NUMBER i.e. the collection of whole numbers is closed under addition. This property is known as the CLOSURE property for addition of whole numbers.

Hope it HELPS youhh✌️✌️❣️❣️❗️❗️

Discussion

38.	USE OF EXPONENTSTO EXPRESS LARGE NUMBERS IN STANDARD FORMRecall that
Answer» Step-by-step explanation: REACTION with METAL Reaction with metal Base + Metal → Salt + H2 gas Reaction with metal Base + Metal → Salt + H2 gase.g., 2NaOH + Zn → Na2ZnO2 + H2 Reaction with metal Base + Metal → Salt + H2 gase.g., 2NaOH + Zn → Na2ZnO2 + H2This reaction is POSSIBLE only with reactive METALS like sodium and potassium.

38.

USE OF EXPONENTSTO EXPRESS LARGE NUMBERS IN STANDARD FORMRecall that

Answer»

Step-by-step explanation:

REACTION with METAL

Reaction with metal Base + Metal → Salt + H2 gas

Reaction with metal Base + Metal → Salt + H2 gase.g., 2NaOH + Zn → Na2ZnO2 + H2

Reaction with metal Base + Metal → Salt + H2 gase.g., 2NaOH + Zn → Na2ZnO2 + H2This reaction is POSSIBLE only with reactive METALS like sodium and potassium.

Discussion

39.	Simplify: :If x+1/x=4 evaluate (а) (x-1/x) (b) (x? +l/x?)
Answer» ANSWER: This implies that x2+2ax=4x−4a−13 or x2+2ax−4x+4a+13=0 or x2+(2a−4)X+(4a+13)=0 Since the EQUATION has just ONE solution instead of the usual two distinct solutions, then the two solutions must be same i.e. discriminant = 0. Hence we get that (2a−4)2=4⋅1⋅(4a+13) or 4a2−16a+16=16a+52 or 4a2−32a−36=0 or a2−8a−9=0 or (a−9)(a+1)=0 So the values of a are −1 and 9.

39.

Simplify: :If x+1/x=4 evaluate (а) (x-1/x) (b) (x? +l/x?)

Answer»

ANSWER:

This implies that

x2+2ax=4x−4a−13

or

x2+2ax−4x+4a+13=0

or

x2+(2a−4)X+(4a+13)=0

Since the EQUATION has just ONE solution instead of the usual two distinct solutions, then the two solutions must be same i.e. discriminant = 0.

Hence we get that

(2a−4)2=4⋅1⋅(4a+13)

or

4a2−16a+16=16a+52

or

4a2−32a−36=0

or

a2−8a−9=0

or

(a−9)(a+1)=0

So the values of a are −1 and 9.

Discussion

40.	Pls pls solve this question
Answer» ANSWER: SORRY I didn't KNOW the answer

40.

Pls pls solve this question

Answer»

ANSWER:

SORRY I didn't KNOW the answer

Discussion

41.	Calculate the area of each of the following figures. All measure are in meters:
Answer» ANSWER: FIRS .96 second. 48...

41.

Calculate the area of each of the following figures. All measure are in meters:

Answer»

ANSWER:

FIRS .96

second. 48...

Discussion

42.	Can anybody give real life example of basic proportionality theorem with diagram.
Answer» Answer: It can be useful as paintings, TILES & many other things as such require PRECISION & BPT helps to make SURE that its in PROPORTIONAL. The theorem states that when a line is drawn parallel to one side of the triangle (inside it) it divides the other two sides of the same triangle in equal proportions. Step-by-step EXPLANATION: ♡I hope it'll help you ♡

42.

Can anybody give real life example of basic proportionality theorem with diagram.

Answer»

Answer:

It can be useful as paintings, TILES & many other things as such require PRECISION & BPT helps to make SURE that its in PROPORTIONAL. The theorem states that when a line is drawn parallel to one side of the triangle (inside it) it divides the other two sides of the same triangle in equal proportions.

Step-by-step EXPLANATION:

♡I hope it'll help you ♡

Discussion

43.	Find the corcinate of point of linejoining point (2, 3) and (4, 6)which diveds the ratio 1:3 internaly
Answer» Answer:Given:- A(x₁, y₁) = (2, 3) B(x₂, y₂) = (4, 6) m : N = 1 : 3 internally. To find:- P(α, β) = ? Answer:- We have to use the section formula for internal division. It says that, If P(α, β) divides a line segment AB with A(x₁, y₁) and B(x₂, y₂) internally in the RATIO m : n, then, α = [(mx₂ + nx₁) / (m + n)] β = [(my₂ + ny₁) / (m + n)] According to the question, putting the VALUES as, x₁ = 2 y₁ = 3 x₂ = 4 y₂ = 6 m = 1 n = 3 Putting the values in the formula, ▪α = [(mx₂ + nx₁) / (m + n)] → α = [ {(1 × 4) + (3 × 2)} / (1 + 3) ] → α = [ {4 + 6} / 4 ] → α = 10/4 → α = 2.5 And, ▪β = [(my₂ + ny₁) / (m + n)] → β = [ {(1 × 6) + (3 × 3)} / (1 + 3)] → β = [ {6 + 9} / {4} ] → β = 15/4 → β = 3.75 So, → P(α, β) = (2.5, 3.75) Ans. Step-by-step explanation:

43.

Find the corcinate of point of linejoining point (2, 3) and (4, 6)which diveds the ratio 1:3 internaly

Answer»

Answer:Given:-

A(x₁, y₁) = (2, 3)

B(x₂, y₂) = (4, 6)

m : N = 1 : 3 internally.

To find:-

P(α, β) = ?

Answer:-

We have to use the section formula for internal division. It says that,

If P(α, β) divides a line segment AB with A(x₁, y₁) and B(x₂, y₂) internally in the RATIO m : n, then,

α = [(mx₂ + nx₁) / (m + n)]

β = [(my₂ + ny₁) / (m + n)]

According to the question, putting the VALUES as,

x₁ = 2

y₁ = 3

x₂ = 4

y₂ = 6

m = 1

n = 3

Putting the values in the formula,

▪α = [(mx₂ + nx₁) / (m + n)]

→ α = [ {(1 × 4) + (3 × 2)} / (1 + 3) ]

→ α = [ {4 + 6} / 4 ]

→ α = 10/4

→ α = 2.5

And,

▪β = [(my₂ + ny₁) / (m + n)]

→ β = [ {(1 × 6) + (3 × 3)} / (1 + 3)]

→ β = [ {6 + 9} / {4} ]

→ β = 15/4

→ β = 3.75

So,

→ P(α, β) = (2.5, 3.75) Ans.

Step-by-step explanation:

Discussion

44.	Factories xy+x^y-x-x^2
Answer» ANSWER: i also want it PLEASE ANYONE TELL

44.

Factories xy+x^y-x-x^2

Answer»

ANSWER:

i also want it PLEASE ANYONE TELL

Discussion

45.	If (x - 7) and (x + p) are the factors ofthe polynomial Ax) = x2 + 2x + q, then
Answer» Step-by-step EXPLANATION: ਮੂਲਧਨ=7500ਰੁਪਏ , 5% ਸਲਾਨਾ ਦਰ ਲਈ 3 ਸਾਲਾਂ ਬਾਅਦ ਕਿੰਨਾਂ ਮਿਸ਼ਰਤ ਧਨ ਪ੍ਰਾਪਤ ਹੋਵੇਗਾ?

45.

If (x - 7) and (x + p) are the factors ofthe polynomial Ax) = x2 + 2x + q, then

Answer»

Step-by-step EXPLANATION:

ਮੂਲਧਨ=7500ਰੁਪਏ , 5% ਸਲਾਨਾ ਦਰ ਲਈ 3 ਸਾਲਾਂ ਬਾਅਦ ਕਿੰਨਾਂ ਮਿਸ਼ਰਤ ਧਨ ਪ੍ਰਾਪਤ ਹੋਵੇਗਾ?

Discussion

46.	If line q has a slope of -2:, what is the slope of any prependicular to q?
Answer» ANSWER: -3 : is the answer of PREPENDICULAR

46.

If line q has a slope of -2:, what is the slope of any prependicular to q?

Answer»

ANSWER:

-3 : is the answer of PREPENDICULAR

Discussion

47.	Q.If any two rows or columns of a determinant A are identical, then the value of that determinant is01-1None of them.
Answer» Answer: 0 Step-by-step EXPLANATION: if any two ROWS or COLUMNS in a matrix are IDENTICAL or same ,the value of its determinant is 0....... Hope it is helpful.. please FOLLOW me

47.

Q.If any two rows or columns of a determinant A are identical, then the value of that determinant is01-1None of them.

Answer»

Answer:

0

Step-by-step EXPLANATION:

if any two ROWS or COLUMNS in a matrix are IDENTICAL or same ,the value of its determinant is 0.......

Hope it is helpful..

please FOLLOW me

Discussion

48.	Choose the first step that should be used to solve the equation. 5 + 3n = −11
Answer» Answer: 5+11=-3N Step-by-step EXPLANATION:

48.

Choose the first step that should be used to solve the equation. 5 + 3n = −11

Answer»

Answer:

5+11=-3N

Step-by-step EXPLANATION:

Discussion

49.	एक समचतुर्भुज का एक कोण 60° तथा उसकी कोई एक भुजा 8 समा हा प्रत्यककी लंबाई प्राप्त कीजिए।524 सेमी और 10 सेमी हैं, तो इसका (a) क्षेत्रफल
Answer» Answer: hiiiii he'll Hello KITTY CAT is equal interval between a s good night FRIENDS the STRAIGHT to you KAKA k baad hi there my mobile phone number for this calendar is indicated by arrow down

49.

एक समचतुर्भुज का एक कोण 60° तथा उसकी कोई एक भुजा 8 समा हा प्रत्यककी लंबाई प्राप्त कीजिए।524 सेमी और 10 सेमी हैं, तो इसका (a) क्षेत्रफल

Answer»

Answer:

hiiiii he'll Hello KITTY CAT is equal interval between a s good night FRIENDS the STRAIGHT to you KAKA k baad hi there my mobile phone number for this calendar is indicated by arrow down

Discussion

50.	If a= 2+√3 find the value of (a-1/a)² and (a+1/a)²
Answer» Solution : Given value of a : a = 2 + √3. Let US find the reciprocal of a or 1/a. 1/a => 1/( 2 + √3 ) => ( 2-√3)/( 2+√3)(2-√3) => 2-√3 Now , a + 1/a => 2 + √3 + 2 - √3 => 4 a - 1/a => 2 + √3 - (2-√3) => 2 + √3 - 2 + √3 => 2√3 (a + 1/a)² = ( 4)² = 16 ( a - 1/a)² = ( 2√3) = 12 . This is the required answer . _______________________________ Additional Information : (a + b)² = a² + 2ab + b² (a + b)² = (a - b)² + 4ab (a - b)² = a² - 2ab + b² (a - b)² = (a + b)² - 4ab a² + b² = (a + b)² - 2ab a² + b² = (a - b)² + 2ab 2 (a² + b²) = (a + b)² + (a - b)² 4ab = (a + b)² - (a - b)² AB = {(a + b)/2}² - {(a-b)/2}² (a + b + c)² = a² + b² + c² + 2(ab + bc + ca) (a + b)³ = a³ + 3a²b + 3ab² b³ (a + b)³ = a³ + b³ + 3AB(a + b) (a - b)³ = a³ - 3a²b + 3ab² - b³ a³ + b³ = (a + b)( a² - ab + b² ) a³ + b³ = (a + b)³ - 3ab( a + b) a³ - b³ = (a - b)( a² + ab + b²) a³ - b³ = (a - b)³ + 3ab ( a - b ) _______________________________

50.

If a= 2+√3 find the value of (a-1/a)² and (a+1/a)²

Answer»

Solution :

Given value of a :

a = 2 + √3.

Let US find the reciprocal of a or 1/a.

1/a

=> 1/( 2 + √3 )

=> ( 2-√3)/( 2+√3)(2-√3)

=> 2-√3

Now ,

a + 1/a

=> 2 + √3 + 2 - √3

=> 4

a - 1/a

=> 2 + √3 - (2-√3)

=> 2 + √3 - 2 + √3

=> 2√3

(a + 1/a)² = ( 4)² = 16

( a - 1/a)² = ( 2√3) = 12 .

This is the required answer .

_______________________________

Additional Information :

(a + b)² = a² + 2ab + b²

(a + b)² = (a - b)² + 4ab

(a - b)² = a² - 2ab + b²

(a - b)² = (a + b)² - 4ab

a² + b² = (a + b)² - 2ab

a² + b² = (a - b)² + 2ab

2 (a² + b²) = (a + b)² + (a - b)²

4ab = (a + b)² - (a - b)²

AB = {(a + b)/2}² - {(a-b)/2}²

(a + b + c)² = a² + b² + c² + 2(ab + bc + ca)

(a + b)³ = a³ + 3a²b + 3ab² b³

(a + b)³ = a³ + b³ + 3AB(a + b)

(a - b)³ = a³ - 3a²b + 3ab² - b³

a³ + b³ = (a + b)( a² - ab + b² )

a³ + b³ = (a + b)³ - 3ab( a + b)

a³ - b³ = (a - b)( a² + ab + b²)

a³ - b³ = (a - b)³ + 3ab ( a - b )

_______________________________

Discussion

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