332354 + Interview Questions in Secondary School in Math

1.	Write four solutions for the given equation22/7*x+y=9
Answer» πx + y = 9 22x/7 + y = 9 y = 9 - 22x/7 1 ) if x = 7 , y = 9 - 22 = - 13 ( x , y ) = ( 7 , - 13 ) 2 ) if x = 14, y = 9 - 44 = - 35 ( x , y ) = ( 14 , -35 ) 3 ) if x = - 7 y = 9 + 22 = 31 ( x , y ) = ( - 7 , 31 ) 4 ) if x = - 14, y = 9 + 44 = 53 ( x , y ) = ( - 14 , 53 ) $\huge\underline \pink {sushant2141}$

1.

Write four solutions for the given equation22/7*x+y=9

Answer»

πx + y = 9

22x/7 + y = 9

y = 9 - 22x/7

1 ) if x = 7 ,

y = 9 - 22 = - 13

( x , y ) = ( 7 , - 13 )

2 ) if x = 14,

y = 9 - 44 = - 35

( x , y ) = ( 14 , -35 )

3 ) if x = - 7

y = 9 + 22 = 31

( x , y ) = ( - 7 , 31 )

4 ) if x = - 14,

y = 9 + 44 = 53

( x , y ) = ( - 14 , 53 )

$\huge\underline \pink {sushant2141}$

Discussion

2.	The probabilities of selecting a number out of fourdifferent numbers are P1, P2, P3, P, for the fournumbers. Which of the following could be theindividual values of the four probabilities?
Answer» <P>Answer: The probabilities of selecting a NUMBER out of FOUR different numbers are P1, P2, P3, P, for the four numbers. Which of the following could be the individual values of the four probabilities? The probabilities of selecting a number out of four different numbers are P1, P2, P3, P, for the four numbers. Which of the following could be the individual values of the four probabilities? Step-by-step EXPLANATION: The probabilities of selecting a number out of four different numbers are P1, P2, P3, P, for the four numbers. Which of the following could be the individual values of the four probabilities? The probabilities of selecting a number out of four different numbers are P1, P2, P3, P, for the four numbers. Which of the following could be the individual values of the four probabilities?

2.

The probabilities of selecting a number out of fourdifferent numbers are P1, P2, P3, P, for the fournumbers. Which of the following could be theindividual values of the four probabilities?

Answer»

<P>Answer:

The probabilities of selecting a NUMBER out of FOUR

different numbers are P1, P2, P3, P, for the four

numbers. Which of the following could be the

individual values of the four probabilities?

The probabilities of selecting a number out of four

different numbers are P1, P2, P3, P, for the four

numbers. Which of the following could be the

individual values of the four probabilities?

Step-by-step EXPLANATION:

The probabilities of selecting a number out of four

different numbers are P1, P2, P3, P, for the four

numbers. Which of the following could be the

individual values of the four probabilities?

The probabilities of selecting a number out of four

different numbers are P1, P2, P3, P, for the four

numbers. Which of the following could be the

individual values of the four probabilities?

Discussion

3.	(iii) The sum of the digits of a two-digit number is 9. Also, nine times this number istwice the number obtained by reversing the order of the digits. Find the number.
Answer» ANSWER: गज़कमचगज़खजखखखखकएचकेडीटीटीसीजीएमसीजीएमआईसीपीयूसीएचसी

3.

(iii) The sum of the digits of a two-digit number is 9. Also, nine times this number istwice the number obtained by reversing the order of the digits. Find the number.

Answer»

ANSWER:

गज़कमचगज़खजखखखखकएचकेडीटीटीसीजीएमसीजीएमआईसीपीयूसीएचसी

Discussion

4.	6. A car charges x/km. If a customer isgiven a discount of 50 on the total bill.then write the algebraic expression forthe amount the customer has to pay fortravelling 6 km in the car
Answer» ANSWER: HI there I am not SURE if you have any QUESTIONS

4.

6. A car charges x/km. If a customer isgiven a discount of 50 on the total bill.then write the algebraic expression forthe amount the customer has to pay fortravelling 6 km in the car

Answer»

ANSWER:

HI there I am not SURE if you have any QUESTIONS

Discussion

5.	What is the value of the variance when all data in the set are equal?
Answer» *Understanding Variance* Understanding VarianceA LARGE variance indicates that numbers in the set are FAR from the mean and far from each other. A SMALL variance, on the other HAND, indicates the OPPOSITE. A variance value of zero, though, indicates that all values within a set of numbers are identical.

5.

What is the value of the variance when all data in the set are equal?

Answer»

Understanding Variance

Understanding VarianceA LARGE variance indicates that numbers in the set are FAR from the mean and far from each other. A SMALL variance, on the other HAND, indicates the OPPOSITE. A variance value of zero, though, indicates that all values within a set of numbers are identical.

Discussion

6.	Song - digit number?38. The number of students in a hostel, speaking different languages is given below. Display the data in a piechartLanguageHindi English Marathi Tamilbengali totalNumber of students 40129747239
Answer» Answer: dhdgdvd R. TRUE STORY of a few minutes to solve the problem of u the panchayat elections are Step-by-step explanation: fh fh you are not the village to raise the u of OAK PARK the village to raise money to

6.

Song - digit number?38. The number of students in a hostel, speaking different languages is given below. Display the data in a piechartLanguageHindi English Marathi Tamilbengali totalNumber of students 40129747239

Answer»

Answer:

dhdgdvd R. TRUE STORY of a few minutes to solve the problem of u the panchayat elections are

Step-by-step explanation:

fh fh you are not the village to raise the u of OAK PARK the village to raise money to

Discussion

7.	Define a line segment a line a ray
Answer» A line segment has two endpoints. It contains these endpoints and all the points of the line between them. You can MEASURE the LENGTH of a segment, but not of a line. ... A ray is a PART of a line that has one ENDPOINT and goes on infinitely in only one direction.

Discussion

8.	Plz answerThis question is to be simplified
Answer» ANSWER: x⁶/25 - 1/y² Step-by-step EXPLANATION: (5x⁻³yz²)⁻² = (5x⁻³)⁻² - (yz²)⁻² = (5⁻²)(x⁻³)⁻² - (y)⁻²(z²)⁻² = 1/25(x⁶) - y⁻² z° = x⁶/25 - y⁻².1 = x⁶/25 - 1/y²

8.

Plz answerThis question is to be simplified

Answer»

ANSWER:

x⁶/25 - 1/y²

Step-by-step EXPLANATION:

(5x⁻³yz²)⁻²

= (5x⁻³)⁻² - (yz²)⁻²

= (5⁻²)(x⁻³)⁻² - (y)⁻²(z²)⁻²

= 1/25(x⁶) - y⁻² z°

= x⁶/25 - y⁻².1

= x⁶/25 - 1/y²

Discussion

9.	Some articles were brought at 6 for Rs 5 and sold at 5 for Rs 6 find the gain percent
Answer» Answer:44% step by step explanation Cost of 1 article = Rs 5/6. selling PRICE of 1 article = Rs 6/5. profit = 6/5 - 5/6 = Rs 11/30. % GAIN = (11/30)/5/6*100 = 11/25 = 44%

9.

Some articles were brought at 6 for Rs 5 and sold at 5 for Rs 6 find the gain percent

Answer»

Answer:44%

step by step explanation

Cost of 1 article = Rs 5/6.

selling PRICE of 1 article = Rs 6/5.

profit = 6/5 - 5/6 = Rs 11/30.

% GAIN = (11/30)/5/6*100 = 11/25 = 44%

Discussion

10.	the perpendicular drawn from one vertex to opposite side of an equilateral triangle is 12 cm. find perimeter and area of this triangle
Answer» Answer: hi Step-by-step EXPLANATION: HOPE U having a good day

10.

the perpendicular drawn from one vertex to opposite side of an equilateral triangle is 12 cm. find perimeter and area of this triangle

Answer»

Answer:

hi

Step-by-step EXPLANATION:

HOPE U having a good day

Discussion

11.	The value of i109 is
Answer» 109/4= 27 REMAINDER 1 Using above knowledge i109= (I4)27×i1= (1)27×i1= 1×i1= i1= i

11.

The value of i109 is

Answer»

109/4= 27 REMAINDER 1

Using above knowledge

i109=

(I4)27×i1=

(1)27×i1=

1×i1=

i1=

i

Discussion

12.	What is the sum of first seven negative integers ?
Answer» Step-by-step EXPLANATION: ANSWER in ATTACHED FILE

12.

What is the sum of first seven negative integers ?

Answer»

Step-by-step EXPLANATION:

ANSWER in ATTACHED FILE

Discussion

13.	2x³ + 5x² + 9 ÷ x + 3 pls tell
Answer» ANSWER ETUSE POINTS KE LIYE ANS BILKUL NHI MERA KUCH BHI FAIDA NHI

13.

2x³ + 5x² + 9 ÷ x + 3 pls tell

Answer»

ANSWER

ETUSE POINTS KE LIYE ANS BILKUL NHI

MERA KUCH BHI FAIDA NHI

Discussion

14.	A milk tank is in the form of a cylinder whose radius is 1.5 m and lengthis 7m. Find thequantity ol milk in litres that can be stored in the tank?
Answer» The ANSWER is here in the IMAGE :-

Discussion

15.	6. A car charges *x/km. If a customer isgiven a discount of 50 on the total bill,then write the algebraic expression forthe amount the customer has to pay fortravelling 6 km in the car.
Answer» Answer: 50a Step-by-step EXPLANATION: PLZ MAKE me BRAINLIEST

15.

6. A car charges *x/km. If a customer isgiven a discount of 50 on the total bill,then write the algebraic expression forthe amount the customer has to pay fortravelling 6 km in the car.

Answer»

Answer:

50a

Step-by-step EXPLANATION:

PLZ MAKE me BRAINLIEST

Discussion

16.	8x³ - 4x² ÷ 2x² pls tell
Answer» ANSWER: $\frac{ {8x}^{3} - {4x}^{2} }{ {2x}^{2} } = 4x - 2$ this is the answer

16.

8x³ - 4x² ÷ 2x² pls tell

Answer»

ANSWER:

$\frac{ {8x}^{3} - {4x}^{2} }{ {2x}^{2} } = 4x - 2$

this is the answer

Discussion

17.	Find the integer which gives (+35)when multiplied by (-1)
Answer» ANSWER: Hope this helps you Step-by-step explanation: When (-1) is MULTIPLIED by (-35) it gives (+35) Your answer is (-35)

17.

Find the integer which gives (+35)when multiplied by (-1)

Answer»

ANSWER:

Hope this helps you

Step-by-step explanation:

When (-1) is MULTIPLIED by (-35) it gives (+35)

Your answer is (-35)

Discussion

18.	Proof that a²+b²+c² +2ab+2ac+2bc is equal to (a+b+c) ²
Answer» Step-by-step EXPLANATION: SEE this is the SOLUTION

18.

Proof that a²+b²+c² +2ab+2ac+2bc is equal to (a+b+c) ²

Answer»

Step-by-step EXPLANATION:

SEE this is the SOLUTION

Discussion

19.	4. If seco -1312find the values of other trigonometric ratios.Prove the following.
Answer» ANSWER: this is your answer HOPE it will HELP you

19.

4. If seco -1312find the values of other trigonometric ratios.Prove the following.

Answer»

ANSWER:

this is your answer HOPE it will HELP you

Discussion

20.	A school has less than 500 students. The total number of students can be divided into 3 equal-sized groups, 4 equal-sized groups, 5 equal-sized groups, or 7 equal-sized groups. How many students does the school have?A. 280B. 420C. 480D. Can't say - many answers possible
Answer» Answer: B. 420 Step-by-step explanation: LCM of 3, 4, 5 and 7 is 420.

20.

A school has less than 500 students. The total number of students can be divided into 3 equal-sized groups, 4 equal-sized groups, 5 equal-sized groups, or 7 equal-sized groups. How many students does the school have?A. 280B. 420C. 480D. Can't say - many answers possible

Answer»

Answer:

B. 420

Step-by-step explanation:

LCM of 3, 4, 5 and 7 is 420.

Discussion

21.	In ∆ ABC, ∠A = 30° , AC = 14, then find AB and BC
Answer» this is only possible when ∆ABC is a right ∆ by APPLYING TRIGONOMETRIC VALUES ...

21.

In ∆ ABC, ∠A = 30° , AC = 14, then find AB and BC

Answer»

this is only possible when ∆ABC is a right ∆

by APPLYING TRIGONOMETRIC VALUES ...

Discussion

22.	If a+b = 4 and a^3+b^3 = 28. find a^2+b^2
Answer» Answer: 10 Step-by-step explanation: LET a be 3 and b be 1 now on APPLYING it on EQUATION we get 3+1 =4 3^3 + 1^3 = 28 27 + 1 = 28 3^2 + 1^2 = ? 9 + 1 = ? 10 = ?.

22.

If a+b = 4 and a^3+b^3 = 28. find a^2+b^2

Answer»

Answer:

10

Step-by-step explanation:

LET a be 3 and b be 1

now on APPLYING it on EQUATION we get

3+1 =4

3^3 + 1^3 = 28

27 + 1 = 28

3^2 + 1^2 = ?

9 + 1 = ?

10 = ?.

Discussion

23.	92 : What is the acceleration of a car ifthe speed of the car has increased from 25km per hour to 40 km per hour in oneया टोना।
Answer» ANSWER: ucuvugvxtxtdtdydydychchch

23.

92 : What is the acceleration of a car ifthe speed of the car has increased from 25km per hour to 40 km per hour in oneया टोना।

Answer»

ANSWER:

ucuvugvxtxtdtdydydychchch

Discussion

24.	The product of ab and a-b
Answer» ANSWER is (a²b - ab²) HOPE it will HELP you

24.

The product of ab and a-b

Answer»

ANSWER is (a²b - ab²)

HOPE it will HELP you

Discussion

25.	G. Which of the following are perfect cube :- (i) 8000 (ii) 3375
Answer» Step-by-step EXPLANATION: i) 8000 20^3 = 20 X 20 x 20 = 8000 Hope it HELPS.

25.

G. Which of the following are perfect cube :- (i) 8000 (ii) 3375

Answer»

Step-by-step EXPLANATION:

i) 8000

20^3 = 20 X 20 x 20 = 8000

Hope it HELPS.

Discussion

26.	By what number should (-4)- be multiplied so that the product becomes 10-12
Answer» Answer: 10-12 = -2 therefore, $- 4 \times \frac{1}{2} = - 2$

26.

By what number should (-4)- be multiplied so that the product becomes 10-12

Answer»

Answer:

10-12 = -2

therefore,

$- 4 \times \frac{1}{2} = - 2$

Discussion

27.	Blanc plc has 200,000 4% £1 preference shares and 600,000 £1 ordinary shares in issue if the company pays an ordinary dividend of 5 pence pershare during the year ended 31 December 2020, the total dividends payable that year would be
Answer» Answer: And the names of all the names of the best of luck to all the time of the best REGARDS DAVID sent from Samsung TABLET HI everyone I know you are not the intended recipient you are not the

27.

Blanc plc has 200,000 4% £1 preference shares and 600,000 £1 ordinary shares in issue if the company pays an ordinary dividend of 5 pence pershare during the year ended 31 December 2020, the total dividends payable that year would be

Answer»

Answer:

And the names of all the names of the best of luck to all the time of the best REGARDS DAVID sent from Samsung TABLET HI everyone I know you are not the intended recipient you are not the

Discussion

28.	If by selling a bed sheet for * 150, a person loses 4%. For what amount should he sell it so asto gain 20%?
Answer» Step-by-step explanation: 187.5 is the ANSWER for above question =120/96 ×150 =187.5

28.

If by selling a bed sheet for * 150, a person loses 4%. For what amount should he sell it so asto gain 20%?

Answer»

Step-by-step explanation:

187.5 is the ANSWER for above question

=120/96 ×150

=187.5

Discussion

29.	. If the roots of the equation 2x2 - 5x + b = 0 are in the ratio of 2:3, then find the value of b?
Answer» ANSWER: p=−2x2+5x Step-by-step explanation: 2x2−5x+p=0 2x2+p−5x+ −2 X 2=0+ −2x2 p−5x=−2x2 p−5x+5x=−2x2+5x p=−2x2+5x

29.

. If the roots of the equation 2x2 - 5x + b = 0 are in the ratio of 2:3, then find the value of b?

Answer»

ANSWER: p=−2x2+5x

Step-by-step explanation:

2x2−5x+p=0

2x2+p−5x+ −2 X 2=0+ −2x2

p−5x=−2x2

p−5x+5x=−2x2+5x

p=−2x2+5x

Discussion

30.	Write tha number in expanded from and also write tha number name. 3 17 656
Answer» ANSWER: Step-by-step EXPLANATION:

30.

Write tha number in expanded from and also write tha number name. 3 17 656

Answer»

ANSWER:

Step-by-step EXPLANATION:

Discussion

31.	If y =(2x - 3)* then y; is
Answer» ANSWER: (2X - 3) Step-by-step explanation: acq it is the answe but I THINK it is not the complete question think what It is not a fullbquestion

31.

If y =(2x - 3)* then y; is

Answer»

ANSWER:

(2X - 3)

Step-by-step explanation:

acq it is the answe but I THINK it is not the complete question

think what It is not a fullbquestion

Discussion

32.	# 1. What is the sum of the last two digits of the product 1-2-3-4-5-4-3-2 - 1?(A) 2(B) 4(C) 6(D) 8E) 163 POINTSa. (A)b. (B)C. (C)d. (D)e. (E)
Answer» ANSWER: $7 \sqrt[?]{?} 5 < \times 891x89) \sqrt{2} > 2161.x3..31 \times 1 \frac{ \frac{ { { \frac{.}{?} }^{2} }^{2} }{?} }{?}$

32.

# 1. What is the sum of the last two digits of the product 1-2-3-4-5-4-3-2 - 1?(A) 2(B) 4(C) 6(D) 8E) 163 POINTSa. (A)b. (B)C. (C)d. (D)e. (E)

Answer»

ANSWER:

$7 \sqrt[?]{?} 5 < \times 891x89) \sqrt{2} > 2161.x3..31 \times 1 \frac{ \frac{ { { \frac{.}{?} }^{2} }^{2} }{?} }{?}$

Discussion

33.	. If a and b are the roots of the equation x2 - 9x + 20 = 0, find the value of a2 + b2 + ab?
Answer» Solution Given :- Equation, x² - 9x + 20 = 0 a & B are roots this Equation Find :- VALUE of a² + b² + AB Explanation Using Formula ★Sum of roots = -(Coefficient of x)/(Coefficient of x²) ★Product of roots = ( constant part)/(coefficient of x²) So, ==> Sum of roots =. -(-9) ==> a + b = 9_________(1) And, == > a. b = 20_________(2) Squaring both side of equ (1) ==> (a + b )² = 9² ==> a² + b² + 2ab = 81________(3) subtract equ(2) & equ(3) ==> a² + b² + ab = 61 Hence Value of a² + b² + ab will be = 61 ________________

33.

. If a and b are the roots of the equation x2 - 9x + 20 = 0, find the value of a2 + b2 + ab?

Answer»

Solution

Given :-

Equation, x² - 9x + 20 = 0
a & B are roots this Equation

Find :-

VALUE of a² + b² + AB

Explanation

Using Formula

★Sum of roots = -(Coefficient of x)/(Coefficient of x²)

★Product of roots = ( constant part)/(coefficient of x²)

So,

==> Sum of roots =. -(-9)

==> a + b = 9_________(1)

And,

== > a. b = 20_________(2)

Squaring both side of equ (1)

==> (a + b )² = 9²

==> a² + b² + 2ab = 81________(3)

subtract equ(2) & equ(3)

==> a² + b² + ab = 61

Hence

Value of a² + b² + ab will be = 61

________________

Discussion

34.	The inner curved surface area of a well is 792 m2 and radius of its base is 21 m. Find its height. PLEASE HELP PLEASEEE im weak at maths
Answer» ANSWER: H=6m Step-by-step explanation: INNER curved SURFACE of area cylinder=2Πrh 792=2×22/7×21×h h= 792/2×22×3 h= 6m

34.

The inner curved surface area of a well is 792 m2 and radius of its base is 21 m. Find its height. PLEASE HELP PLEASEEE im weak at maths

Answer»

ANSWER:

H=6m

Step-by-step explanation:

INNER curved SURFACE of area cylinder=2Πrh

792=2×22/7×21×h

h= 792/2×22×3

h= 6m

Discussion

35.	11. By what number should (-4)-be multiplied so that the product becomes 10-12-55(A)-2(B) (C)(D)(Ans B
Answer» ANSWER: -2 is the CORRECT answer

35.

11. By what number should (-4)-be multiplied so that the product becomes 10-12-55(A)-2(B) (C)(D)(Ans B

Answer»

ANSWER:

-2 is the CORRECT answer

Discussion

36.	Find the cube root of 11³ * 5³ * 2^6
Answer» Step-by-step EXPLANATION: in this is QUESTION U jv to find out cuberoot yes or no plz TELL me

36.

Find the cube root of 11³ * 5³ * 2^6

Answer»

Step-by-step EXPLANATION:

in this is QUESTION U jv to find out cuberoot yes or no plz TELL me

Discussion

37.	If ×+y+z=0show that ×3+y3+z3=3xyz
Answer» Step-by-step EXPLANATION: GIVEN x3+y3+z3-3xyz=(x+y+z)(x2+y2+z2-xy-yz-zx) x3+y3+z3-3xyz=0×(x2+y2+z2-xy-yz-zx) x3+y3+z3-3xyz=0 x3+y3+Z3=3xyz

37.

If ×+y+z=0show that ×3+y3+z3=3xyz

Answer»

Step-by-step EXPLANATION:

GIVEN

x3+y3+z3-3xyz=(x+y+z)(x2+y2+z2-xy-yz-zx) x3+y3+z3-3xyz=0×(x2+y2+z2-xy-yz-zx) x3+y3+z3-3xyz=0 x3+y3+Z3=3xyz

Discussion

38.	Write the following rational number in decimal form 22/7
Answer» Answer: 3.14 Step-by-step explanation: 22:7 as a COMMON FRACTION is 22/7 and to convert to a DECIMAL fraction divide 7 into 22. I GOT 22/7 = 3.142857... Rounded to the nearest HUNDREDTH this is 3.14.

38.

Write the following rational number in decimal form 22/7

Answer»

Answer:

3.14

Step-by-step explanation:

22:7 as a COMMON FRACTION is 22/7 and to convert to a DECIMAL fraction divide 7 into 22. I GOT 22/7 = 3.142857... Rounded to the nearest HUNDREDTH this is 3.14.

Discussion

39.	The inner curved surface area of a well is 792 m2 and radius of its base is 21 m. Find its height. PLEASE HELP PLEASEEE
Answer» ANSWER: h=6m Step-by-step explanation: INNER curved SURFACE AREA of cylinder= 2Πrh 792= 2×22/7×21×h 792= 2×22×3×h 792/2×22×3=h h=6m

39.

The inner curved surface area of a well is 792 m2 and radius of its base is 21 m. Find its height. PLEASE HELP PLEASEEE

Answer»

ANSWER:

h=6m

Step-by-step explanation:

INNER curved SURFACE AREA of cylinder= 2Πrh

792= 2×22/7×21×h

792= 2×22×3×h

792/2×22×3=h

h=6m

Discussion

40.	If f(x) = 2x?-1, 1
Answer» Answer: If F(x) = 2X?-1, 1 Step-by-step EXPLANATION: If f(x) = 2x?-1, 1

40.

If f(x) = 2x?-1, 1

Answer»

Answer:

If F(x) = 2X?-1, 1

Step-by-step EXPLANATION:

If f(x) = 2x?-1, 1

Discussion

41.	Evaluate the following step by step
Answer» Find the VALUE of the INTEGRAL cos^3x (LOWER limit = 0, upper limit = π/2) Answer: 2/3 Step-by-step explanation: $\implies \sf{\int\limits^{\pi/2}_0 {cos^3x} \, dx }$ $\implies \sf{\int\limits^{\pi/2}_0 {(cos^2x)cosx} \, dx }$ $\implies \sf{\int\limits^{\pi/2}_0 {(1-sin^2x)cosx} \, dx }$ $\sf{Let\;sinx\: = t,}\\\sf{ differentiate\:w.r.t.\:x}\\\sf{cosx.dx = dt},\;\;\;\; therefore$ $\\\implies \sf{\int\limits^{\pi/2}_0 {1} \, dt - \int\limits^{\pi/2}_0 {t^2} \, dt}$ $\\\\\implies \sf{t\|_0 ^{\pi/2} - \bigg[\dfrac{t^3}{3}\bigg]\bigg\|_0 ^{\pi/2} }$ $\\\\\sf{\implies [sin(\pi/2) - sin(0)] - \dfrac{1}{3}[sin^3(\pi/2) - sin^3(0)]}$ $\\\\\sf{\implies (1-0) - (1/3) [1 - 0]}$ $\\\\\implies 1 - 1/3 \\\\\implies 2/3$

41.

Evaluate the following step by step

Answer»

Find the VALUE of the INTEGRAL cos^3x (LOWER limit = 0, upper limit = π/2)

Answer:

2/3

Step-by-step explanation:

$\implies \sf{\int\limits^{\pi/2}_0 {cos^3x} \, dx }$

$\implies \sf{\int\limits^{\pi/2}_0 {(cos^2x)cosx} \, dx }$

$\implies \sf{\int\limits^{\pi/2}_0 {(1-sin^2x)cosx} \, dx }$

$\sf{Let\;sinx\: = t,}\\\sf{ differentiate\:w.r.t.\:x}\\\sf{cosx.dx = dt},\;\;\;\; therefore$

$\\\implies \sf{\int\limits^{\pi/2}_0 {1} \, dt - \int\limits^{\pi/2}_0 {t^2} \, dt}$

$\\\\\implies \sf{t|_0 ^{\pi/2} - \bigg[\dfrac{t^3}{3}\bigg]\bigg|_0 ^{\pi/2} }$

$\\\\\sf{\implies [sin(\pi/2) - sin(0)] - \dfrac{1}{3}[sin^3(\pi/2) - sin^3(0)]}$

$\\\\\sf{\implies (1-0) - (1/3) [1 - 0]}$

$\\\\\implies 1 - 1/3 \\\\\implies 2/3$

Discussion

42.	-10V.If26, then find the value of m.85
Answer» ANSWER: m=3 stay BLESS

42.

-10V.If26, then find the value of m.85

Answer»

ANSWER:

m=3

stay BLESS

Discussion

43.	Find the circumference of a circle, whose diameter is:(a) 20 cm
Answer» Answer: 62.8cm Step-by-step explanation: *CIRCUMFERENCE of CIRCLE = 2PIr* Diameter = 20 r (radius) = diameter/2 20/2 10cm 23.1410 62.8cm

43.

Find the circumference of a circle, whose diameter is:(a) 20 cm

Answer»

Answer:

62.8cm

Step-by-step explanation:

CIRCUMFERENCE of CIRCLE = 2*PI*r

Diameter = 20

r (radius) = diameter/2

20/2

10cm

2*3.14*10

62.8cm

Discussion

44.	Subtract3xy+5yz–7zxfrom5xy-2yz-2zx+10xyz
Answer» ANSWER: $5xy-2yz-2zx+10xyz - (3xy+5yz–7zx)$ $5xy - 2yz - 2zx + 10xyz - 3xy - 5yz + 7zx$ $5xy - 3xy - 2yz - 5yz - 2zx + 7zx + 10xyz$ $2xy - 7yz + 5zx + 10xyz$

44.

Subtract3xy+5yz–7zxfrom5xy-2yz-2zx+10xyz

Answer»

ANSWER:

$5xy-2yz-2zx+10xyz - (3xy+5yz–7zx)$

$5xy - 2yz - 2zx + 10xyz - 3xy - 5yz + 7zx$

$5xy - 3xy - 2yz - 5yz - 2zx + 7zx + 10xyz$

$2xy - 7yz + 5zx + 10xyz$

Discussion

45.	1) 40a 30a
Answer» ANSWER: SORRY FRIEND I don't KNOW this QUESTION answer

45.

1) 40a 30a

Answer»

ANSWER:

SORRY FRIEND I don't KNOW this QUESTION answer

Discussion

46.	Write a dialogue writing between two friends road trip a favourite place?✎﹏﹏﹏﹏﹏﹏﹏﹏﹏﹏mere bhai mujhe thanks nahi chaye hamne i.d delete kar rakha hai btw thanks
Answer» VAISA MAI ITNI KHAS NAHI PAR APNA ITNI TARIF KAR DI AGAR TIME MILA TO BATANA VAISA AAP KA NAAM MUJHA BATANA AAGAR APKO SAHI LAGA TO

46.

Write a dialogue writing between two friends road trip a favourite place?✎﹏﹏﹏﹏﹏﹏﹏﹏﹏﹏mere bhai mujhe thanks nahi chaye hamne i.d delete kar rakha hai btw thanks

Answer»

VAISA MAI ITNI KHAS NAHI PAR APNA ITNI TARIF KAR DI

AGAR TIME MILA TO BATANA

VAISA AAP KA NAAM MUJHA BATANA

AAGAR APKO SAHI LAGA TO

Discussion

47.	2n+4 -2.2n +2-3=n=?
Answer» ANSWER: SORRY FRIEND I don't KNOW this QUESTION answer

47.

2n+4 -2.2n +2-3=n=?

Answer»

ANSWER:

SORRY FRIEND I don't KNOW this QUESTION answer

Discussion

48.	Who is no 1 T20 batsman in the world
Answer» ANSWER: DAWID Malan PLZ MARK me as BRAINLIST

48.

Who is no 1 T20 batsman in the world

Answer»

ANSWER:

DAWID Malan

PLZ MARK me as BRAINLIST

Discussion

49.	Find the area of a regular hexagon of side .1) 2cm 2) 10cm 3)2.4cm
Answer» Answer: 2. 10 CM Step-by-step EXPLANATION: dgjgrtzoopppppppp

49.

Find the area of a regular hexagon of side .1) 2cm 2) 10cm 3)2.4cm

Answer»

Answer:

2. 10 CM

Step-by-step EXPLANATION:

dgjgrtzoopppppppp

Discussion

50.	In a computer lab, there are 3 computers for every 6 students. Howmany computers will be needed for 24 students?
Answer» Answer: 12 COMPUTER are NEEDED for 24 STUDENTS

50.

In a computer lab, there are 3 computers for every 6 students. Howmany computers will be needed for 24 students?

Answer»

Answer:

12 COMPUTER are NEEDED for 24 STUDENTS

Discussion

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. If a and b are the roots of the equation x2 - 9x + 20 = 0, find the value of a2 + b2 + ab?​

Solution

Explanation

Using Formula

Hence

________________

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What is the value of the variance when all data in the set are equal?

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Plz answerThis question is to be simplified

Some articles were brought at 6 for Rs 5 and sold at 5 for Rs 6 find the gain percent

the perpendicular drawn from one vertex to opposite side of an equilateral triangle is 12 cm. find perimeter and area of this triangle

The value of i109 is

What is the sum of first seven negative integers ?

2x³ + 5x² + 9 ÷ x + 3 pls tell

A milk tank is in the form of a cylinder whose radius is 1.5 m and lengthis 7m. Find thequantity ol milk in litres that can be stored in the tank?

6. A car charges *x/km. If a customer isgiven a discount of 50 on the total bill,then write the algebraic expression forthe amount the customer has to pay fortravelling 6 km in the car.

8x³ - 4x² ÷ 2x² pls tell

Find the integer which gives (+35)when multiplied by (-1)

Proof that a²+b²+c² +2ab+2ac+2bc is equal to (a+b+c) ²

4. If seco -1312find the values of other trigonometric ratios.Prove the following.

In ∆ ABC, ∠A = 30° , AC = 14, then find AB and BC

If a+b = 4 and a^3+b^3 = 28. find a^2+b^2

92 : What is the acceleration of a car ifthe speed of the car has increased from 25km per hour to 40 km per hour in oneया टोना।

The product of ab and a-b

G. Which of the following are perfect cube :- (i) 8000 (ii) 3375

By what number should (-4)- be multiplied so that the product becomes 10-12

Blanc plc has 200,000 4% £1 preference shares and 600,000 £1 ordinary shares in issue if the company pays an ordinary dividend of 5 pence pershare during the year ended 31 December 2020, the total dividends payable that year would be

If by selling a bed sheet for * 150, a person loses 4%. For what amount should he sell it so asto gain 20%?

. If the roots of the equation 2x2 - 5x + b = 0 are in the ratio of 2:3, then find the value of b?

Write tha number in expanded from and also write tha number name. 3 17 656

If y =(2x - 3)* then y; is

# 1. What is the sum of the last two digits of the product 1-2-3-4-5-4-3-2 - 1?(A) 2(B) 4(C) 6(D) 8E) 163 POINTSa. (A)b. (B)C. (C)d. (D)e. (E)

. If a and b are the roots of the equation x2 - 9x + 20 = 0, find the value of a2 + b2 + ab?

The inner curved surface area of a well is 792 m2 and radius of its base is 21 m. Find its height. PLEASE HELP PLEASEEE im weak at maths

11. By what number should (-4)-be multiplied so that the product becomes 10-12-55(A)-2(B) (C)(D)(Ans B

Find the cube root of 11³ * 5³ * 2^6

If ×+y+z=0show that ×3+y3+z3=3xyz

Write the following rational number in decimal form 22/7

The inner curved surface area of a well is 792 m2 and radius of its base is 21 m. Find its height. PLEASE HELP PLEASEEE

Evaluate the following step by step

-10V.If26, then find the value of m.85

Find the circumference of a circle, whose diameter is:(a) 20 cm

Subtract3xy+5yz–7zxfrom5xy-2yz-2zx+10xyz

1) 40a 30a

Write a dialogue writing between two friends road trip a favourite place?✎﹏﹏﹏﹏﹏﹏﹏﹏﹏﹏mere bhai mujhe thanks nahi chaye hamne i.d delete kar rakha hai btw thanks

2n+4 -2.2n +2-3=n=?

Who is no 1 T20 batsman in the world

Find the area of a regular hexagon of side .1) 2cm 2) 10cm 3)2.4cm

In a computer lab, there are 3 computers for every 6 students. Howmany computers will be needed for 24 students?