332354 + Interview Questions in Secondary School in Math

1.	the radius of a metallic sphere is 9 cm.the sphere is melted and drawn into a wire of uniform cross section. If the length of the wire is 243m. find the radius of the cross section
Answer» ANSWER: GIVEN 9CM and the 243 CM is crosa

1.

the radius of a metallic sphere is 9 cm.the sphere is melted and drawn into a wire of uniform cross section. If the length of the wire is 243m. find the radius of the cross section

Answer»

ANSWER:

GIVEN 9CM and the 243 CM is crosa

Discussion

2.	9≤1-2xwhere x € (-3, 4,-5, -6]
Answer» Answer: t this week to discuss it was the best for the DELAY I was just about to the next day of class of your choice but I will have been in a COUPLE years of work to a different from the bottom line with a BIT more information and NECESSARY but it seems to the next couple weeks of a lot more information on XEROX to be able is that I can

2.

9≤1-2xwhere x € (-3, 4,-5, -6]

Answer»

Answer:

t this week to discuss it was the best for the DELAY I was just about to the next day of class of your choice but I will have been in a COUPLE years of work to a different from the bottom line with a BIT more information and NECESSARY but it seems to the next couple weeks of a lot more information on XEROX to be able is that I can

Discussion

3.	3.If a + b + c = 0 then a^2/bc +b^2/ca+c^2/ab
Answer» i thing is that i DONT KNOW the answer please FORGIVE me for not giving the answer

3.

3.If a + b + c = 0 then a^2/bc +b^2/ca+c^2/ab

Answer»

i thing is that i DONT KNOW the answer please FORGIVE me for not giving the answer

Discussion

4.	A has definite length and two end points
Answer» A LINE SEGMENT has two ENDPOINTS. A line has no end POINT. A line-segment has a definite LENGTH.

Discussion

5.	1) The cost of onepen is rupee 12. find the cost of one dozen pens.
Answer» ANSWER: COST of 1 PEN is ₹12 Cost of 6 pens is 12×6=72 pens please mark as brainlest

5.

1) The cost of onepen is rupee 12. find the cost of one dozen pens.

Answer»

ANSWER:

COST of 1 PEN is ₹12

Cost of 6 pens is 12×6=72 pens

please mark as brainlest

Discussion

6.	. If side of a Cube is 4.5cm, then find its vertical surface area.1 point91859581l
Answer» Answer: 85 is a right answer Step-by-step explanation: because 4.5 but you UNDERSTAND 4 ka half 2 hota hai and 8 ka half 9 so 8 ko half karo to 4.phir point as gya and 5 ka 5 REH gya to isme HMMA mor wala digit he badlna hai to 85 is a andwer

6.

. If side of a Cube is 4.5cm, then find its vertical surface area.1 point91859581l

Answer»

Answer:

85 is a right answer

Step-by-step explanation:

because 4.5 but you UNDERSTAND 4 ka half 2 hota hai and 8 ka half 9 so 8 ko half karo to 4.phir point as gya and 5 ka 5 REH gya to isme HMMA mor wala digit he badlna hai to 85 is a andwer

Discussion

7.	आवृत्ति वक्र से आप क्या समझते हैं
Answer» ANSWER: कोई आवृत घटना (बार-बार दोहराई जाने वाली घटना), इकाई समय में जितनी बार घटित होती है उसे उस घटना की आवृत्ति (frequency) कहते हैं। आवृति को किसी साइनाकार (sinusoidal) तरंग के कला (PHASE) परिवर्तन की दर के रूप में भी समझ सकते हैं। आवृति की इकाई हर्ट्ज (साइकल्स प्रति सेकण्ड) होती है। एक कम्पन पूरा करने में जितना समय लगता है उसे आवर्त काल (TIME Period) कहते हैं। आवर्त काल = 1 / आवृति वह आवृत्ति वक्र जिसमें प्रत्येक प्रेक्षण वर्ग का योग अपने पूर्ववर्ती वर्ग के साथ जुड़ता हुआ शत-प्रतिशत हो जाता है

7.

आवृत्ति वक्र से आप क्या समझते हैं

Answer»

ANSWER:

कोई आवृत घटना (बार-बार दोहराई जाने वाली घटना), इकाई समय में जितनी बार घटित होती है उसे उस घटना की आवृत्ति (frequency) कहते हैं। आवृति को किसी साइनाकार (sinusoidal) तरंग के कला (PHASE) परिवर्तन की दर के रूप में भी समझ सकते हैं। आवृति की इकाई हर्ट्ज (साइकल्स प्रति सेकण्ड) होती है।

एक कम्पन पूरा करने में जितना समय लगता है उसे आवर्त काल (TIME Period) कहते हैं।

आवर्त काल = 1 / आवृति

वह आवृत्ति वक्र जिसमें प्रत्येक प्रेक्षण वर्ग का योग अपने पूर्ववर्ती वर्ग के साथ जुड़ता हुआ शत-प्रतिशत हो जाता है

Discussion

8.	8. Draw a number line and mark the following decimals:a. 10.8
Answer» aaaaaaaaaaaaaaaaaaaaàaa

Discussion

9.	Class 10Mathematics Chapter 14 - StatisticsFormulas Needed Quality Answer Needed
Answer» REQUIRED Formulas : ⠀ 1. Mean of the GROUP data: ⠀ (i) The Direct method forming is GIVEN by, ⠀ $\sf{:\implies Mean (\bar{x}) = \dfrac{\sum f_i x_i}{\sum f_i}}$ ⠀ (ii) The Assume-mean method forming is given by, ⠀ $\sf{:\implies Mean (\bar{x}) = a + \dfrac{\sum f_i d_i}{\sum f_i}}$ ⠀ (iii) The Step-deviation method formula is given by, ⠀ $\sf{:\implies Mean (\bar{x}) = a + \bigg\lgroup\dfrac{\sum f_i u_i}{\sum f_i}\bigg\rgroup \times h}$ ⠀ 2. Mode of the group data: ⠀ The mode formula is given by, ⠀ $\sf{:\implies Mode (M_o) = l + \bigg\lgroup \dfrac{f_1 - f_0}{2f_1 - f_0 - f_2}\bigg\rgroup \times h}$ ⠀ 3. Median of the group data: ⠀ The median formula is given by, ⠀ $\displaystyle\sf{:\implies Median (M_e) = l + \bigg\lgroup \frac{ \frac{n}{2} - cf}{f} \bigg \rgroup \times h}$ ⠀ 4. Empirical formula: ⠀ The Empirical formula is given by, ⠀ $\sf{:\implies 3Median = Mode + 2Mean}$ ⠀ $\setlength{\unitlength}{1.0 cm}}\begin{picture}(12,4)\thicklines\put(1,1){\line(1,0){6.5}}\put(1,1.1){\line(1,0){6.5}}\put(1,1.2){\line(1,0){6.5}}\end{picture}$

9.

Class 10Mathematics Chapter 14 - StatisticsFormulas Needed Quality Answer Needed

Answer»

REQUIRED Formulas :

⠀

1. Mean of the GROUP data:

⠀

(i) The Direct method forming is GIVEN by,

⠀

$\sf{:\implies Mean (\bar{x}) = \dfrac{\sum f_i x_i}{\sum f_i}}$

⠀

(ii) The Assume-mean method forming is given by,

⠀

$\sf{:\implies Mean (\bar{x}) = a + \dfrac{\sum f_i d_i}{\sum f_i}}$

⠀

(iii) The Step-deviation method formula is given by,

⠀

$\sf{:\implies Mean (\bar{x}) = a + \bigg\lgroup\dfrac{\sum f_i u_i}{\sum f_i}\bigg\rgroup \times h}$

⠀

2. Mode of the group data:

⠀

The mode formula is given by,

⠀

$\sf{:\implies Mode (M_o) = l + \bigg\lgroup \dfrac{f_1 - f_0}{2f_1 - f_0 - f_2}\bigg\rgroup \times h}$

⠀

3. Median of the group data:

⠀

The median formula is given by,

⠀

$\displaystyle\sf{:\implies Median (M_e) = l + \bigg\lgroup \frac{ \frac{n}{2} - cf}{f} \bigg \rgroup \times h}$

⠀

4. Empirical formula:

⠀

The Empirical formula is given by,

⠀

$\sf{:\implies 3Median = Mode + 2Mean}$

⠀

$\setlength{\unitlength}{1.0 cm}}\begin{picture}(12,4)\thicklines\put(1,1){\line(1,0){6.5}}\put(1,1.1){\line(1,0){6.5}}\put(1,1.2){\line(1,0){6.5}}\end{picture}$

Discussion

10.	thanks dedo please
Answer» Answer: yaar THANKS to de DUN par isse koi farq NAHI padta aap dost BANAO

10.

thanks dedo please

Answer»

Answer:

yaar THANKS to de DUN par isse koi farq NAHI padta

aap dost BANAO

Discussion

11.	Weight of the block of the same metal of size 1 m1 1mx2 21. If 1 cm of wood weighs g, find the weight of a wooden block whose length is210 cm, breadth is 5 cm and height is 3 cm.8 SURFACE AREA AND VOLUME OF A RIGHT CIRCULAR CYLINDERthe previous section, we have learnt how to findNoterearea of a cuboid. We may
Answer» area of RECTANGLE ( length ×breadth)SQ. units area of SQUARE (side×side) square.units so with the HELP of FORMULA you do this sum

Discussion

12.	2. If p(x)=x²-2underroot2x+1, then p(2underoot 2) is equal to
Answer» Answer: 54 hshfjrhdhdjfjndbdjejfjjtjejs

12.

2. If p(x)=x²-2underroot2x+1, then p(2underoot 2) is equal to

Answer»

Answer:

54 hshfjrhdhdjfjndbdjejfjjtjejs

Discussion

13.	Y यदि x से 25% अधिक हो तो x,y से कितन % कम होगा
Answer» Answer: 20% Step-by-step EXPLANATION: if x=100 then y=100+25%=125 so, y is 25 GREATER than x so 25/125×100=20

13.

Y यदि x से 25% अधिक हो तो x,y से कितन % कम होगा

Answer»

Answer:

20%

Step-by-step EXPLANATION:

if x=100 then y=100+25%=125

so, y is 25 GREATER than x

so 25/125×100=20

Discussion

14.	M 12 -9944Solve x+1/x=99(1/99)
Answer» Answer: 9944×99 Step-by-step explanation: 1.2 3 21755145244789

14.

M 12 -9944Solve x+1/x=99(1/99)

Answer»

Answer:

9944×99

Step-by-step explanation:

1.2

3

21755145244789

Discussion

15.	Of (-30)+(-20)+(-63)+(+75)(+65) (-27 )
Answer» ANSWER: 70 is the answer here at this POINT

15.

Of (-30)+(-20)+(-63)+(+75)(+65) (-27 )

Answer»

ANSWER:

70 is the answer here at this POINT

Discussion

16.	Statement Sums3- TotalTown1.Ramu bought 1 kg, tomatoes, 2 kg. potatoes and 250 gram chillies from themarket. So what is the total weight of these vegetables?
Answer» Answer: 3kg and 250 g Step-by-step explanation: ADD 1 and 2 KG then add 250 g

16.

Statement Sums3- TotalTown1.Ramu bought 1 kg, tomatoes, 2 kg. potatoes and 250 gram chillies from themarket. So what is the total weight of these vegetables?

Answer»

Answer:

3kg and 250 g

Step-by-step explanation:

ADD 1 and 2 KG

then add 250 g

Discussion

17.	( _y _ 9 , find x , if y =-2
Answer» ANSWER: WOW what a QUESTION man are

17.

( _y _ 9 , find x , if y =-2

Answer»

ANSWER:

WOW

what

a QUESTION man

are

Discussion

18.	8.The denominator of a rational number is greater than its numerator by 7. 3is subtracted from the numerator and 2 is added to its denominator, the newIfph1number becomes5Find the rational number.
Answer» Answer: I don't UNDERSTAND this QUESTION Step-by-step explanation: please RIGHT the question in well way otherwise update the question PIV

18.

8.The denominator of a rational number is greater than its numerator by 7. 3is subtracted from the numerator and 2 is added to its denominator, the newIfph1number becomes5Find the rational number.

Answer»

Answer:

I don't UNDERSTAND this QUESTION

Step-by-step explanation:

please RIGHT the question in well way otherwise update the question PIV

Discussion

19.	The mean devotion of the scores 12, 15 , 18 , is
Answer» Step-by-step EXPLANATION: ARRANGE arrange in ascending order 12, 15, 18 the BIGGEST number --- the smallest number ANS is 6

19.

The mean devotion of the scores 12, 15 , 18 , is

Answer»

Step-by-step EXPLANATION:

ARRANGE arrange in ascending order

12, 15, 18

the BIGGEST number --- the smallest number

ANS is 6

Discussion

20.	If the ratio of adjacent angles of parallelogram is 1:2, then find measures of all angles of parallelogram?1 point45,90,45,9060, 120, 60, 120120, 60, 120, 6090, 45, 90, 45
Answer» Step-by-step explanation: 60 ,120 ,60, 120 is the ANSWER for above QUESTION

20.

If the ratio of adjacent angles of parallelogram is 1:2, then find measures of all angles of parallelogram?1 point45,90,45,9060, 120, 60, 120120, 60, 120, 6090, 45, 90, 45

Answer»

Step-by-step explanation:

60 ,120 ,60, 120 is the ANSWER for above QUESTION

Discussion

21.	distance of chord AB from the centre of a circle is 8 cm. length of the chord AB is 2cm. find the radius of circle
Answer» Step-by-step EXPLANATION: z7srr7srsrusrud966s36zr

21.

distance of chord AB from the centre of a circle is 8 cm. length of the chord AB is 2cm. find the radius of circle

Answer»

Step-by-step EXPLANATION:

z7srr7srsrusrud966s36zr

Discussion

22.	3.+2x-3 का मान यदि x =2 हो-
Answer» ANSWER: 1 Step-by-step explanation: If X = 2, then, $2x - 3 \\ = 2 \times 2 - 3 \\ = 4 - 3 \\ = 1$ HOPE it will HELP you✌️ PLEASE MARK the answer as BRAINLIEST. ✍️

22.

3.+2x-3 का मान यदि x =2 हो-

Answer»

ANSWER:

1

Step-by-step explanation:

If X = 2, then,

$2x - 3 \\ = 2 \times 2 - 3 \\ = 4 - 3 \\ = 1$

HOPE it will HELP you✌️

PLEASE MARK the answer as BRAINLIEST. ✍️

Discussion

23.	hlo Janhavi plx tell in which date will ur exams end. And I like to talk to strangers because i don't have much friends and second reason We always talk with our friends etc but we should once check world outside. i hope u understand
Answer» ANSWER: Don't answer any of my QUESTION PLEASE BHAIYA

23.

hlo Janhavi plx tell in which date will ur exams end. And I like to talk to strangers because i don't have much friends and second reason We always talk with our friends etc but we should once check world outside. i hope u understand

Answer»

ANSWER:

Don't answer any of my QUESTION PLEASE BHAIYA

Discussion

24.	An equilateral triangle has an altitude of length 16 cm. Find the length of each side.Please put an explanation, thanks :)
Answer» Answer: 18.4752086141 cm Step-by-step EXPLANATION: Each angle of an EQUILATERAL triangle is 60° sin 60° = $\frac{h}{x}$ ⇒ x = $\frac{h}{sin 60}$ ⇒ x = 2h/√3 Using the formula, we GET: x = 2×16/√3 = 32/√3 = 18.4752086141

24.

An equilateral triangle has an altitude of length 16 cm. Find the length of each side.Please put an explanation, thanks :)

Answer»

Answer:

18.4752086141 cm

Step-by-step EXPLANATION:

Each angle of an EQUILATERAL triangle is 60°

sin 60° = $\frac{h}{x}$

⇒ x = $\frac{h}{sin 60}$

⇒ x = 2h/√3

Using the formula, we GET:

x = 2×16/√3

= 32/√3

= 18.4752086141

Discussion

25.	Solve this question yeah achha hai
Answer» -1 yr PLZ MARK as BRANLIST

25.

Solve this question yeah achha hai

Answer»

-1

yr PLZ MARK as BRANLIST

Discussion

26.	G 3@ af A B = 2:3 and B. c = 4:5, then A.B.C
Answer» Answer: So the ratio of a:b:c=8:12:15 Step-by-step explanation: We are given with TWO simple ratios a:b=2:3, b:c=4:5 When we want the combined ratio of these KIND of ratios like a:b:c, we do have a small trick. In a:b:c the ratio COMPONENT of ‘a’ will be the product of compnent of ‘a’ in a:b and component of ‘b’ in b:c I.E., 24=8. a=8. Component of ‘b’ will be product ‘b’ COMPONENTS in both the ratios I.E., 43=12. b=12 Component of c will be product of Component of b in a:b and c component in b:c I.E., 5*3=15. C=15

26.

G 3@ af A B = 2:3 and B. c = 4:5, then A.B.C

Answer»

Answer:

So the ratio of a:b:c=8:12:15

Step-by-step explanation:

We are given with TWO simple ratios

a:b=2:3,

b:c=4:5

When we want the combined ratio of these KIND of ratios like a:b:c, we do have a small trick.

In a:b:c the ratio COMPONENT of ‘a’ will be the product of compnent of ‘a’ in a:b and component of ‘b’ in b:c I.E., 2*4=8. a=8.

Component of ‘b’ will be product ‘b’ COMPONENTS in both the ratios I.E., 4*3=12. b=12

Component of c will be product of Component of b in a:b and c component in b:c I.E., 5*3=15. C=15

Discussion

27.	कोई संख्या अपने 4 सप्तांश से 18 अधिक है तो वह संख्या क्या होगी
Answer» Answer: 14 Step-by-step EXPLANATION: MANA KI saptansh Sankhya=X x+4=18 X=18-4 =14

27.

कोई संख्या अपने 4 सप्तांश से 18 अधिक है तो वह संख्या क्या होगी

Answer»

Answer:

14

Step-by-step EXPLANATION:

MANA KI saptansh Sankhya=X

x+4=18

X=18-4

=14

Discussion

28.	Evaluate :(-5/6)power 3 I HOPE U UNDERSTAND PLEASE ANSWER CORRECTLY
Answer» ANSWER: (-125/216) Step-by-step EXPLANATION: (-5/6)^3 = (-555/666) = (-125/216) answer I *hope* it is *USEFUL* *for* *you. So plz* *give* me 10♥ *for* it.

28.

Evaluate :(-5/6)power 3 I HOPE U UNDERSTAND PLEASE ANSWER CORRECTLY

Answer»

ANSWER:

(-125/216)

Step-by-step EXPLANATION:

(-5/6)^3

= (-5*5*5/6*6*6)

= (-125/216) answer

I hope it is USEFUL for you.

So plz give me 10♥ for it.

Discussion

29.	A box contains 8 balls, 2 red, 3 blue , 1 green and 2 white. Four balls are selected randomly. What is the probability of having?1) 2 red and 2 blue?2) Different balls?3) At least 2 blue balls?
Answer» Answer: First of all we have 10 balls of which 2 are red, 3 are black and 4 are blue. If we can think carefully, the question is given that, when 3 balls are drawn, the balls are of DIFFERENT COLORS. There are 3 colors. So definitely one BALL should be drawn from each of the color. So the number of ways of HAPPENING the above case is 4C13C12C1. Let it be T(E). The number of ways of drawing three balls from 9 balls is given as 9C3. Let this be S(E). Let the probability of happening the given condition be P(E). Then according to definition of probability, we calculate it as, P(E)=T(E)/S(E). P(E)=432/9C3. =24/84. =2/7.

29.

A box contains 8 balls, 2 red, 3 blue , 1 green and 2 white. Four balls are selected randomly. What is the probability of having?1) 2 red and 2 blue?2) Different balls?3) At least 2 blue balls?

Answer»

Answer:

First of all we have 10 balls of which 2 are red, 3 are black and 4 are blue.

If we can think carefully, the question is given that, when 3 balls are drawn, the balls are of DIFFERENT COLORS. There are 3 colors. So definitely one BALL should be drawn from each of the color.

So the number of ways of HAPPENING the above case is 4C1*3C1*2C1.

Let it be T(E).

The number of ways of drawing three balls from 9 balls is given as 9C3. Let this be S(E).

Let the probability of happening the given condition be P(E).

Then according to definition of probability, we calculate it as,

P(E)=T(E)/S(E).

P(E)=4*3*2/9C3.

=24/84.

=2/7.

Discussion

30.	Solve the above question that carries 4 marks
Answer» Question: The SUM of denominator and denominator of a fraction is 4 more than twice the numerator. If the denominator and numerator are increased by 3, they are in ratio of 2:3. Answer: 5/9 Step-by-step EXPLANATION: Let the denominator be 'x' and numerator be 'y'. Hence, the fraction is y/x According to the question: Case 1: ⇒ x + y = 4 + 2y ⇒ x = 4 + y ...(1) Case 2: If both are increased by 3, denominator = x + 3 and numerator = y + 3 Ratio is 2 : 3. ⇒ (y + 3)/(x + 3) = 2/3 ⇒ 3(y + 3) = 2(x + 3) ⇒ 3y + 9 = 2x + 6 from (1) ⇒ 3y + 9 - 6 = 2(4 + y) ⇒ 3y + 3 = 8 + 2y ⇒ 3y - 2y = 8 - 3 = 5 ⇒ y = 5 hence, x = 4 + y = 4 + 5 = 9 Therefore, the fraction is: fraction = y/x = 5/9 Fraction is 5/9

30.

Solve the above question that carries 4 marks

Answer»

Question: The SUM of denominator and denominator of a fraction is 4 more than twice the numerator. If the denominator and numerator are increased by 3, they are in ratio of 2:3.

Answer:

5/9

Step-by-step EXPLANATION:

Let the denominator be 'x' and numerator be 'y'. Hence, the fraction is y/x

According to the question:

Case 1: ⇒ x + y = 4 + 2y

⇒ x = 4 + y ...(1)

Case 2: If both are increased by 3,

denominator = x + 3 and numerator = y + 3

Ratio is 2 : 3.

⇒ (y + 3)/(x + 3) = 2/3

⇒ 3(y + 3) = 2(x + 3)

⇒ 3y + 9 = 2x + 6

from (1)

⇒ 3y + 9 - 6 = 2(4 + y)

⇒ 3y + 3 = 8 + 2y

⇒ 3y - 2y = 8 - 3 = 5

⇒ y = 5

hence,

x = 4 + y = 4 + 5 = 9

Therefore, the fraction is:

fraction = y/x = 5/9

Fraction is 5/9

Discussion

31.	Constract an equilateral triangle, given it's side and justify the construction
Answer» Step-by-step EXPLANATION: in EQUILATERAL traingle all SIDES are same and angles also same = 60°

31.

Constract an equilateral triangle, given it's side and justify the construction

Answer»

Step-by-step EXPLANATION:

in EQUILATERAL traingle all SIDES are same

and angles also same = 60°

Discussion

32.	रिक्त स्थानों की पूर्ति कीजिए।Q.1 ax काxके सापेक्ष अवकल गुणांकगुणांक ....है।
Answer» ANSWER: LKB MATHS TUTORIAL (LKB GK-GS HOUSE)

32.

रिक्त स्थानों की पूर्ति कीजिए।Q.1 ax काxके सापेक्ष अवकल गुणांकगुणांक ....है।

Answer»

ANSWER:

LKB MATHS TUTORIAL (LKB GK-GS HOUSE)

Discussion

33.	Them together?A shopkeeper bought 100 kg. sugar and carried it to his village. Due to asmall hole in the sack, some of the sugar fell on the way. He reached hisshop and weighed the sugar and found its weight 90.700 kg.. How muchsugar was lost from his sack?
Answer» Step-by-step EXPLANATION: ANSWER is ATTACHED below

33.

Them together?A shopkeeper bought 100 kg. sugar and carried it to his village. Due to asmall hole in the sack, some of the sugar fell on the way. He reached hisshop and weighed the sugar and found its weight 90.700 kg.. How muchsugar was lost from his sack?

Answer»

Step-by-step EXPLANATION:

ANSWER is ATTACHED below

Discussion

34.	Value of 5³×5 isa) 125b) 225c) 525d) 625
Answer» ANSWER: OPTION d) 625 is the answer.

34.

Value of 5³×5 isa) 125b) 225c) 525d) 625

Answer»

ANSWER:

OPTION d) 625 is the answer.

Discussion

35.	In the given figure, find the value of y.o30DB
Answer» Step-by-step explanation: angle AOB=6Y angle FOE=4Y angle COD=8Y NOW FROM FIGURE WE GOT angle AOB=angle DOE(because vertically OPPOSITE ANGLES) so angle DOE=6Y FC is a straight LINE by the PROPERTY of straight line we have DOE+FOE+COD=180 6Y+4Y+8Y=180 18Y=180 Y=180/18 Y=10

35.

In the given figure, find the value of y.o30DB

Answer»

Step-by-step explanation:

angle AOB=6Y

angle FOE=4Y

angle COD=8Y

NOW FROM FIGURE WE GOT

angle AOB=angle DOE(because vertically OPPOSITE ANGLES)

so angle DOE=6Y

FC is a straight LINE

by the PROPERTY of straight line we have

DOE+FOE+COD=180

6Y+4Y+8Y=180

18Y=180

Y=180/18

Y=10

Discussion

36.	If (1, 2), (4, y), (x, 6) and (3, 5) are points of oneparallelogram respectively, find x and y.
Answer» ANSWER: nsjdjdjndkdjdbjdjsbsbndj snsjdjjdjjdjdjdjdj

36.

If (1, 2), (4, y), (x, 6) and (3, 5) are points of oneparallelogram respectively, find x and y.

Answer»

ANSWER:

nsjdjdjndkdjdbjdjsbsbndj snsjdjjdjjdjdjdjdj

Discussion

37.	The cost of 17 sofa sets 66.000 . What will bethe cost of 2 sofa sets ?
Answer» ANSWER: FIRST divide the 17 and 66.000 = which is 3.882 than multiply 3.882×2 = 7.764 7.764 is your answer if *USEFUL* *than* *please* *MARK* it *the* *brainliest*

37.

The cost of 17 sofa sets 66.000 . What will bethe cost of 2 sofa sets ?

Answer»

ANSWER:

FIRST divide the 17 and 66.000 = which is 3.882 than

multiply 3.882×2 = 7.764

7.764 is your answer

if USEFUL than please MARK it the brainliest

Discussion

38.	7) All integers and fractions are called______numbersA. NaturalB. WholeC. RationalD. NegativeMathsMCQ
Answer» Answer: Rational number Step-by-step explanation: The rational numbers are a group of INTEGERS and fractions. HOPE it will HELP you✌️ PLEASE MARK the answer as BRAINLIEST. ✍️

38.

7) All integers and fractions are called______numbersA. NaturalB. WholeC. RationalD. NegativeMathsMCQ

Answer»

Answer:

Rational number

Step-by-step explanation:

The rational numbers are a group of INTEGERS and fractions.

HOPE it will HELP you✌️

PLEASE MARK the answer as BRAINLIEST. ✍️

Discussion

39.	Find the zeroes of the quadratic polynomial f(x) = x2–3x –28 and verify the relationship between the zeroes and the coefficients of the polynomial.
Answer» ANSWER: $Solution : x2−3x−10=0x2-3x-10=0 x2−5x+2x−10=0x2-5x+2x-10=0 x(x−5)+2(x−5)=0x(x-5)+2(x-5)=0 (x−5)(x+2)=0(x-5)(x+2)=0 X=5,−2X=5,-2 Sum of the roots =−ba=31=-ba=31 which is same as 5−2=35-2=3 product of the roots =ca=−10=ca=-10 which is same as 5x(−2)=−105x(-2)=-10 Hence verified$

39.

Find the zeroes of the quadratic polynomial f(x) = x2–3x –28 and verify the relationship between the zeroes and the coefficients of the polynomial.

Answer»

ANSWER:

$Solution : x2−3x−10=0x2-3x-10=0 x2−5x+2x−10=0x2-5x+2x-10=0 x(x−5)+2(x−5)=0x(x-5)+2(x-5)=0 (x−5)(x+2)=0(x-5)(x+2)=0 X=5,−2X=5,-2 Sum of the roots =−ba=31=-ba=31 which is same as 5−2=35-2=3 product of the roots =ca=−10=ca=-10 which is same as 5x(−2)=−105x(-2)=-10 Hence verified$

Discussion

40.	Class 10 Mathematics Objective needed(without the cancelled portion)
Answer» ANSWER: HTT%2Ffiles%2Fimages2%2FClass_10_Mathematics_question_2

40.

Class 10 Mathematics Objective needed(without the cancelled portion)

Answer»

ANSWER:

HTT%2Ffiles%2Fimages2%2FClass_10_Mathematics_question_2

Discussion

41.	The fundust of two even numbers is alwaysAll brime whumbers are add. (table)
Answer» Step-by-step EXPLANATION: The FUNDUST of two even numbers is always All BRIME whumbers are add. (table)

41.

The fundust of two even numbers is alwaysAll brime whumbers are add. (table)

Answer»

Step-by-step EXPLANATION:

The FUNDUST of two even numbers is always

All BRIME whumbers are add. (table)

Discussion

42.	Point S lies in the exterior of a circle with cente P and radius 33 cm. A tangent from 5 touches the circle at T and ST = 56 cm. Find the distanceof S from P.
Answer» ANSWER: This is your answer PLZ MAKE me BRAINLIST plz

42.

Point S lies in the exterior of a circle with cente P and radius 33 cm. A tangent from 5 touches the circle at T and ST = 56 cm. Find the distanceof S from P.

Answer»

ANSWER:

This is your answer

PLZ MAKE me BRAINLIST plz

Discussion

43.	If x=9 + 4root5, then find the value of rootx - 1 by root x.
Answer» GIVEN :- $\\ \sf \: x = 9 + 4 \sqrt{5} \\ \\$ TO FIND :- $\\ \sf \: \sqrt{x} - \dfrac{1}{ \sqrt{x} } \\ \\$ SOLUTION :- We have , $\\ \sf \: x = 9 + 4\sqrt{5} \\$ Taking RECIPROCAL, $\\ \implies\sf \: \dfrac{1}{x} = \dfrac{1}{9 + 4\sqrt{5} } \\$ Rationalising the denominator, Rationalising FACTOR is (9 - 4√5) $\\ \implies\sf \: \dfrac{1}{x} = \dfrac{1}{9 + 4\sqrt{5} } \times \dfrac{9 - 4\sqrt{5} }{9 - 4\sqrt{5} } \\ \\ \implies\sf \: \dfrac{1}{x} = \dfrac{9 - 4\sqrt{5} }{(9 + 4\sqrt{5})(9 - 4\sqrt{5} ) } \\ \\$ In denominator, ★ (a+b)(a-b) = a² - b² a = 9 b = 4√5 Putting VALUES, $\\ \implies\sf \: \dfrac{1}{x} = \dfrac{9 - 4\sqrt{5} }{ {9}^{2} - {( 4\sqrt{5} )}^{2} } \\ \\ \implies\sf \: \dfrac{1}{x} = \dfrac{9 - 4\sqrt{5} }{81 - 80} \\ \\ \implies\sf \: \dfrac{1}{x} = \dfrac{9 - 4\sqrt{5} }{1} \\ \\ \implies\underline{ \sf \: \dfrac{1}{x} = 9 - 4\sqrt{5} } \\ \\$ Now , $\\ \sf \: Let \: \: \: \: y = \sqrt{x} - \dfrac{1}{ \sqrt{x} } \\$ Squaring both sides, $\\ \implies\sf \: {y}^{2} = {\left( \sqrt{x} - \dfrac{1}{ \sqrt{x} } \right)}^{2} \\ \\$ ★ (a-b)² = a² + b² - 2ab a = √x b = 1/√x Putting values, $\\ \implies\sf \: {y}^{2} = { (\sqrt{x} )}^{2} + {\left( \dfrac{1}{ \sqrt{x} } \right)}^{2} - 2( \cancel{ \sqrt{x}} )\left( \dfrac{1}{ \cancel{\sqrt{x} }} \right) \\ \\ \implies\sf \: {y}^{2} = x + \dfrac{1}{x} - 2 \\ \\$ Putting values of x and 1/x.. $\\ \implies\sf \: {y}^{2} = 9 + \cancel{4 \sqrt{5}} + 9 - \cancel{4 \sqrt{5}} - 2 \\ \\ \implies\sf \: {y}^{2} = 16 \\ \\ \implies\boxed{\sf \: y = 4 \: , \: - 4} \\ \\$ Hence , $\\ \boxed{\bf \: \sqrt{x} - \dfrac{1}{ \sqrt{x} } = 4 \: , - 4}$

43.

If x=9 + 4root5, then find the value of rootx - 1 by root x.

Answer»

GIVEN :-

$\\ \sf \: x = 9 + 4 \sqrt{5} \\ \\$

TO FIND :-

$\\ \sf \: \sqrt{x} - \dfrac{1}{ \sqrt{x} } \\ \\$

SOLUTION :-

We have ,

$\\ \sf \: x = 9 + 4\sqrt{5} \\$

Taking RECIPROCAL,

$\\ \implies\sf \: \dfrac{1}{x} = \dfrac{1}{9 + 4\sqrt{5} } \\$

Rationalising the denominator,

Rationalising FACTOR is (9 - 4√5)

$\\ \implies\sf \: \dfrac{1}{x} = \dfrac{1}{9 + 4\sqrt{5} } \times \dfrac{9 - 4\sqrt{5} }{9 - 4\sqrt{5} } \\ \\ \implies\sf \: \dfrac{1}{x} = \dfrac{9 - 4\sqrt{5} }{(9 + 4\sqrt{5})(9 - 4\sqrt{5} ) } \\ \\$

In denominator,

★ (a+b)(a-b) = a² - b²

a = 9
b = 4√5

Putting VALUES,

$\\ \implies\sf \: \dfrac{1}{x} = \dfrac{9 - 4\sqrt{5} }{ {9}^{2} - {( 4\sqrt{5} )}^{2} } \\ \\ \implies\sf \: \dfrac{1}{x} = \dfrac{9 - 4\sqrt{5} }{81 - 80} \\ \\ \implies\sf \: \dfrac{1}{x} = \dfrac{9 - 4\sqrt{5} }{1} \\ \\ \implies\underline{ \sf \: \dfrac{1}{x} = 9 - 4\sqrt{5} } \\ \\$

Now ,

$\\ \sf \: Let \: \: \: \: y = \sqrt{x} - \dfrac{1}{ \sqrt{x} } \\$

Squaring both sides,

$\\ \implies\sf \: {y}^{2} = {\left( \sqrt{x} - \dfrac{1}{ \sqrt{x} } \right)}^{2} \\ \\$

★ (a-b)² = a² + b² - 2ab

a = √x
b = 1/√x

Putting values,

$\\ \implies\sf \: {y}^{2} = { (\sqrt{x} )}^{2} + {\left( \dfrac{1}{ \sqrt{x} } \right)}^{2} - 2( \cancel{ \sqrt{x}} )\left( \dfrac{1}{ \cancel{\sqrt{x} }} \right) \\ \\ \implies\sf \: {y}^{2} = x + \dfrac{1}{x} - 2 \\ \\$

Putting values of x and 1/x..

$\\ \implies\sf \: {y}^{2} = 9 + \cancel{4 \sqrt{5}} + 9 - \cancel{4 \sqrt{5}} - 2 \\ \\ \implies\sf \: {y}^{2} = 16 \\ \\ \implies\boxed{\sf \: y = 4 \: , \: - 4} \\ \\$

Hence ,

$\\ \boxed{\bf \: \sqrt{x} - \dfrac{1}{ \sqrt{x} } = 4 \: , - 4}$

Discussion

44.	Find answer the question please
Answer» Answer: 6x^2 ( -5x^2 + 7X + 9) Step-by-step explanation: 54 x^2 + 42 x ^3 - 30 x^4 taking 6x^2 as common. 6x^2 ( 9 +7x - 5x^2) 6x^2 ( -5x^2 + 7x + 9)

44.

Find answer the question please

Answer»

Answer:

6x^2 ( -5x^2 + 7X + 9)

Step-by-step explanation:

54 x^2 + 42 x ^3 - 30 x^4

taking 6x^2 as common.

6x^2 ( 9 +7x - 5x^2)

6x^2 ( -5x^2 + 7x + 9)

Discussion

45.	My mathematics exam deary entry
Answer» ANSWER: WISHING U all the BEST for it... Do WELL..

45.

My mathematics exam deary entry

Answer»

ANSWER:

WISHING U all the BEST for it...

Do WELL..

Discussion

46.	Q.4) Find: 7/24+17/36
Answer» Step-by-step explanation: $\frac{7}{<klux>24</klux>} + \frac{17}{<klux>36</klux>}$ LCM(24, 36) = 72 $= \frac{7 \times 3}{24 \times 3} + \frac{17 \times 2}{36 \times 2}$ $= \frac{21 + 34}{72}$ $= \frac{55}{72}$ HOPE it will HELP you✌️ PLEASE mark the ANSWER as BRAINLIEST. ✍️

46.

Q.4) Find: 7/24+17/36

Answer»

Step-by-step explanation:

$\frac{7}{<klux>24</klux>} + \frac{17}{<klux>36</klux>}$

LCM(24, 36) = 72

$= \frac{7 \times 3}{24 \times 3} + \frac{17 \times 2}{36 \times 2}$

$= \frac{21 + 34}{72}$

$= \frac{55}{72}$

HOPE it will HELP you✌️

PLEASE mark the ANSWER as BRAINLIEST. ✍️

Discussion

47.	Hlo Janhavi plx tell when will ur exams end.
Answer» *THANKS* *for* *FREE* *POINT. And* my *exam* *was* *end* at 12 *March*..

47.

Hlo Janhavi plx tell when will ur exams end.

Answer»

THANKS for FREE POINT.

And my exam was end at 12 March..

Discussion

48.	(8)(iv) p(x) = (x-1)(x + 1)Use the factor Theorem to determine whether g(x) is a factor of p(x) in each ofthe following casesP(x) = 2x3 + x2 - 2x - 1, g(x) = x + 1(ii) P(x) = x2 + 3x2 + 3x + 1, g(x) = x+2.(111) P(x) = x3 - 4x² + x-6, g(x) = x - 3.Factorize:191
Answer» ANSWER: YOUR ANSWER IS GIVEN ABOVE

48.

(8)(iv) p(x) = (x-1)(x + 1)Use the factor Theorem to determine whether g(x) is a factor of p(x) in each ofthe following casesP(x) = 2x3 + x2 - 2x - 1, g(x) = x + 1(ii) P(x) = x2 + 3x2 + 3x + 1, g(x) = x+2.(111) P(x) = x3 - 4x² + x-6, g(x) = x - 3.Factorize:191

Answer»

ANSWER:

YOUR ANSWER IS GIVEN ABOVE

Discussion

49.	7) All integers and fractions are calledA. NaturalB. WholeC. Rationalnumbers.D. NegativenumberMaths
Answer» Answer: The RATIONAL numbers include all the integers, plus all fractions, or terminating DECIMALS and repeating decimals. EVERY rational number can be written as a fraction a/B, where a and b are integers

49.

7) All integers and fractions are calledA. NaturalB. WholeC. Rationalnumbers.D. NegativenumberMaths

Answer»

Answer:

The RATIONAL numbers include all the integers, plus all fractions, or terminating DECIMALS and repeating decimals. EVERY rational number can be written as a fraction a/B, where a and b are integers

Discussion

50.	The total surface area of a cylinder with radius 21 cm and height 5 cm. (ANS. 3432 cm²)
Answer» Step-by-step explanation: 3432 is the ANSWER for above QUESTION

50.

The total surface area of a cylinder with radius 21 cm and height 5 cm. (ANS. 3432 cm²)

Answer»

Step-by-step explanation:

3432 is the ANSWER for above QUESTION

Discussion

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