332354 + Interview Questions in Secondary School in Math

1.	If A, B, C are inversible matrices then (ABC-1 =(a) A-B-c-1(b) B-C-A-o(c) CA-1B-0(d) CB-A-
Answer» Answer: heyyy DEAR!!! If A,B,C are INVERTIBLE MATRICES then (ABC)^-1= C^(-1)×B^(-1)×A^(-1) hope this helps you.

1.

If A, B, C are inversible matrices then (ABC-1 =(a) A-B-c-1(b) B-C-A-o(c) CA-1B-0(d) CB-A-

Answer»

Answer:

heyyy DEAR!!!

If A,B,C are INVERTIBLE MATRICES then

(ABC)^-1= C^(-1)×B^(-1)×A^(-1)

hope this helps you.

Discussion

2.	A. 26B. 32C. 37D. 42
Answer» Answer: 26 Step-by-step EXPLANATION: a)26 is the ans mark as BRAINLIEST

2.

A. 26B. 32C. 37D. 42

Answer»

Answer:

26

Step-by-step EXPLANATION:

a)26 is the ans

mark as BRAINLIEST

Discussion

3.	A person invested a certain sum for five years at the rate of r% per annum simple interest. If he had invested the same sum at the same rate compounded half yearly for one year, he would have received the same amount. Find the value of r.
Answer» if amount of is same , then interest is also same S.I = C.I \frac{PRT}{100} = P\left [ 1+\left \{ \frac{R/2}{100} \right \}^{2} \right ] \frac{R}{20}+1 = \left \{ 1+\frac{R}{100} \right \}^{2} \frac{1}{20}-\frac{1}{100}^{2}= \frac{R}{4000} R= 1600

3.

A person invested a certain sum for five years at the rate of r% per annum simple interest. If he had invested the same sum at the same rate compounded half yearly for one year, he would have received the same amount. Find the value of r.

Answer»

if amount of is same , then interest is also same

S.I = C.I

\frac{PRT}{100} = P\left [ 1+\left \{ \frac{R/2}{100} \right \}^{2} \right ]

\frac{R}{20}+1 = \left \{ 1+\frac{R}{100} \right \}^{2}

\frac{1}{20}-\frac{1}{100}^{2}= \frac{R}{4000}

R= 1600

Discussion

4.	Square root of 2.5 upto 3 decimal
Answer» Answer: 1.581 Step-by-step EXPLANATION: you can write 2.5 as 25/10 now TAKE separate square ROOTS and DIVIDE to get this answer

4.

Square root of 2.5 upto 3 decimal

Answer»

Answer:

1.581

Step-by-step EXPLANATION:

you can write 2.5 as 25/10

now TAKE separate square ROOTS and DIVIDE to get this answer

Discussion

5.	Find the square root of the following upto three places of decimal l 2
Answer» Answer: 1.414...................

5.

Find the square root of the following upto three places of decimal l 2

Answer»

Answer:

1.414...................

Discussion

6.	Given two regression lines are 8x-10y+66=0; 40x-18y=214 and variance of x is 9 calculate the variance of y
Answer» Answer: 13.8 .........................

6.

Given two regression lines are 8x-10y+66=0; 40x-18y=214 and variance of x is 9 calculate the variance of y

Answer»

Answer:

13.8 .........................

Discussion

7.	If tanA=1/2 and tanB=1/3 then what is the value of 4A+4B=
Answer» ANSWER: calculate for tan(A+B) as we know it is equal to tanA+tanB/(1-tanAtanB). LET X be the calculated value then FIND its inverse.

7.

If tanA=1/2 and tanB=1/3 then what is the value of 4A+4B=

Answer»

ANSWER:

calculate for tan(A+B) as we know it is equal to tanA+tanB/(1-tanAtanB). LET X be the calculated value then FIND its inverse.

Discussion

8.	If l and b are zeroes of the polynomial f (x) =4x power 2 -6x +2,find the value of l3 +b3
Answer» °°QUESTION:➡If l and b are zeroes of the POLYNOMIAL f (X) =4x power 2 -6x +2,find the value of L3 +b3...☢☢ °°TO FIND:➡l^3+b^3☢☢☢☢ STEP by step explanation↪ $\bf\ \: here \: \\ \\ \bf\ \underline{ f(x) \implies {4x}^{2} - 6x + 2 = 0} \\ \\ \bf\ :\implies {4x}^{2} - (4x + 2x) + 2 = 0 \: \: \: \: \\ \\ \boxed{2 \times {4x}^{2} = {8x}^{2} = \underline{2x \: 2x} \: 2x (4x + 2x = 6x \: and \: 4x \times 2x = {8x}^{2} } \\ \\ \bf\ :\implies {4x}^{2} - 4x - 2x + 2 = 0 \\ \\ \bf\ :\implies4x(x - 1) - 2(x - 1) = 0 \\ \\ \bf\ :\implies(4x - 2)(x - 1) = 0 \\ \\ \bf\underline\red{zeros \: are } \\ \\ \bf\underline\blue{4x - 2 = 0 } \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \ \bf\underline\green{x - 1 = 0} \\ \\ \bf\underline\blue{ \implies \: x = \frac{2}{4}} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \implies \bf\underline\green{x = 1}\\ \\ \bf\underline\blue{ \implies \: x = \frac{1}{2} } \\ \\ \bf\ if \: \bf\red{ l = \frac{1}{2}} \: \: \: and \: \: \bf\pink{b = 1} \\ \\ \bf\underline\red{then \: \: \: \: {l}^{3} = ( { \frac{1}{2} }^{3}) } \\ \\ \red{\boxed{\mapsto \frac{1}{8} }} \\ \\ \bf\underline\blue{ {b}^{3} = {1}^{3} } \\ \\ \blue{ \boxed{ \mapsto1}} \\ \\ \bf\red{l^3+b^3=\frac{1}{8}+1} \\ \\ \bf\red{ \implies \frac{1+9}{8}} \\ \\ \bf\red{ \implies \frac{10}{8}}\\ \\ \bf\red{ \implies \frac{5}{4}} \\ \\ \large\boxed{ \fcolorbox{lime}{yellow}{hope \: it \: help \: you}}$

8.

If l and b are zeroes of the polynomial f (x) =4x power 2 -6x +2,find the value of l3 +b3

Answer»

°°QUESTION:➡If l and b are zeroes of the POLYNOMIAL f (X) =4x power 2 -6x +2,find the value of L3 +b3...☢☢

°°TO FIND:➡l^3+b^3☢☢☢☢

STEP by step explanation↪

$\bf\ \: here \: \\ \\ \bf\ \underline{ f(x) \implies {4x}^{2} - 6x + 2 = 0} \\ \\ \bf\ :\implies {4x}^{2} - (4x + 2x) + 2 = 0 \: \: \: \: \\ \\ \boxed{2 \times {4x}^{2} = {8x}^{2} = \underline{2x \: 2x} \: 2x (4x + 2x = 6x \: and \: 4x \times 2x = {8x}^{2} } \\ \\ \bf\ :\implies {4x}^{2} - 4x - 2x + 2 = 0 \\ \\ \bf\ :\implies4x(x - 1) - 2(x - 1) = 0 \\ \\ \bf\ :\implies(4x - 2)(x - 1) = 0 \\ \\ \bf\underline\red{zeros \: are } \\ \\ \bf\underline\blue{4x - 2 = 0 } \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \ \bf\underline\green{x - 1 = 0} \\ \\ \bf\underline\blue{ \implies \: x = \frac{2}{4}} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \implies \bf\underline\green{x = 1}\\ \\ \bf\underline\blue{ \implies \: x = \frac{1}{2} } \\ \\ \bf\ if \: \bf\red{ l = \frac{1}{2}} \: \: \: and \: \: \bf\pink{b = 1} \\ \\ \bf\underline\red{then \: \: \: \: {l}^{3} = ( { \frac{1}{2} }^{3}) } \\ \\ \red{\boxed{\mapsto \frac{1}{8} }} \\ \\ \bf\underline\blue{ {b}^{3} = {1}^{3} } \\ \\ \blue{ \boxed{ \mapsto1}} \\ \\ \bf\red{l^3+b^3=\frac{1}{8}+1} \\ \\ \bf\red{ \implies \frac{1+9}{8}} \\ \\ \bf\red{ \implies \frac{10}{8}}\\ \\ \bf\red{ \implies \frac{5}{4}} \\ \\ \large\boxed{ \fcolorbox{lime}{yellow}{hope \: it \: help \: you}}$

Discussion

9.	What is the simplest form of 22 / 143
Answer» ANSWER: Step-by-step explanation: 2/13

9.

What is the simplest form of 22 / 143

Answer»

ANSWER:

Step-by-step explanation:

2/13

Discussion

10.	16l²-9m²=?R=3.4 S=9.5 P=8.7
Answer» ANSWER: (4l+3m) (4l-3m) is the Answer of your QUESTION

10.

16l²-9m²=?R=3.4 S=9.5 P=8.7

Answer»

ANSWER:

(4l+3m) (4l-3m) is the Answer of your QUESTION

Discussion

11.	A brilliant scientists attended a conference of fifty scientists (comprsing of both men and women ) . the scientists concluded that if out of the participants , any two individuals were picked at random , then at least one of the two would be male . from the aforementioned information , determine what percentage of the attends at the conferrnce were women?
Answer» ANSWER: 50% Step-by-step EXPLANATION:

11.

A brilliant scientists attended a conference of fifty scientists (comprsing of both men and women ) . the scientists concluded that if out of the participants , any two individuals were picked at random , then at least one of the two would be male . from the aforementioned information , determine what percentage of the attends at the conferrnce were women?

Answer»

ANSWER: 50%

Step-by-step EXPLANATION:

Discussion

12.	If a, B, C are in versicle mattresses then (ABC)-1 =
Answer» ANSWER: answer will be OPTION a

12.

If a, B, C are in versicle mattresses then (ABC)-1 =

Answer»

ANSWER:

answer will be OPTION a

Discussion

13.	Plz.. ans me fast..
Answer» 36.5 Step-by-step explanation: MODAL SCORE is SIMILAR to mean score....so its simple answer u GOT it after ADDING these all then divide it by total no..of player..

13.

Plz.. ans me fast..

Answer»

36.5

Step-by-step explanation:

MODAL SCORE is SIMILAR to mean score....so its simple answer u GOT it after ADDING these all then divide it by total no..of player..

Discussion

14.	The value of 5+(-1) does not lies betweenoptiona) 0 and -10b) 0 and 10c) -4 and -15d) -6 and 6
Answer» Answer: C) -4 and -15 Step-by-step explanation: 5+(-1)=5-1=4 since 4 doesn't come between a) 0 and -10 B) 0 and 10 d)-6 and 6

14.

The value of 5+(-1) does not lies betweenoptiona) 0 and -10b) 0 and 10c) -4 and -15d) -6 and 6

Answer»

Answer:

C) -4 and -15

Step-by-step explanation:

5+(-1)=5-1=4

since 4 doesn't come between

a) 0 and -10

B) 0 and 10

d)-6 and 6

Discussion

15.	The square shown is dilated by a scale factor of 2. The center of dilation is point C. Which shows the correct image, A’ ?
Answer» Given : A Square With center point C and Square is DILATED by a scale factor of 2 . The center of dilation point is is C To find : Correct image of Dilated Square Step-by-step explanation: Square is dilated by a scale factor of 2 => NEW square will be twice the ORIGINAL Square The center of dilation point is is C => Center of New Square also will be C New Square with Existing Square Shown in attached figure Square will increase both sides as Center of Dilation point is Center of Square hence Square will increase Equally each side Learn more: A painter is hired to paint a mural on the side of a 16-foot-tall ... brainly.in/question/15590005 Beth is designing a business card. She makes a scale DRAWING of ... brainly.in/question/8401134

15.

The square shown is dilated by a scale factor of 2. The center of dilation is point C. Which shows the correct image, A’ ?

Answer»

Given : A Square With center point C and Square is DILATED by a scale factor of 2 . The center of dilation point is is C

To find : Correct image of Dilated Square

Step-by-step explanation:

Square is dilated by a scale factor of 2

=> NEW square will be twice the ORIGINAL Square

The center of dilation point is is C

=> Center of New Square also will be C

New Square with Existing Square Shown in attached figure

Square will increase both sides as Center of Dilation point is Center of Square hence Square will increase Equally each side

Learn more:

A painter is hired to paint a mural on the side of a 16-foot-tall ...

brainly.in/question/15590005

Beth is designing a business card. She makes a scale DRAWING of ...

brainly.in/question/8401134

Discussion

16.	X3+3x2-7x-9 divided by x+1
Answer» ANSWER: -2 is the CORRECT answer

16.

X3+3x2-7x-9 divided by x+1

Answer»

ANSWER:

-2 is the CORRECT answer

Discussion

17.	If we know that (x - 4 ) is a factor of a polynomial p(x) of degree 3 , what is the remainder of p(x) (÷) (x-4) ?a. 0 b. 1 c. 2 d.3 e. not enough information to find the remainder
Answer» Answer: a.0 Step-by-step explanation: FACTORIAL GIVES a reminder of ONE cus that's a factor Mark me as BRAINLIEST plzzzz.

17.

If we know that (x - 4 ) is a factor of a polynomial p(x) of degree 3 , what is the remainder of p(x) (÷) (x-4) ?a. 0 b. 1 c. 2 d.3 e. not enough information to find the remainder

Answer»

Answer:

a.0

Step-by-step explanation:

FACTORIAL GIVES a reminder of ONE

cus that's a factor

Mark me as BRAINLIEST plzzzz.

Discussion

18.	Please,help me!It is integral with substitution
Answer» Question : Integrate $1) \int \dfrac{cosx \: dx}{4 + sin {}^{2}x}$ $2) \int \dfrac{dx}{x(1 + ln {}^{2} x)}$ Theory: Integration is the inverse process of Differentiation. •Methods of integration Integration by substitution : The GIVEN integral $\int f(x)dx$ can be transformed into another by changing the independent VARIABLE x to t by SUBSTITUTING x = g(t) •Formula's used : $1) \int \frac{1}{x {}^{2} + a {}^{2} } = \frac{1}{a} \tan {}^{ - 1} ( \frac{x}{a} )$ $2) \int \frac{dx}{1 + x {}^{2} } = \tan {}^{ - 1} (x)$ Solution : $1) I= \int \bf \dfrac{cosx \: dx}{4 + sin {}^{2} x}$ Let sinx = t $\frac{dy}{dx} = cosx\implies \frac{<klux>DT</klux>}{cosx} = dx$ $I= \int \frac{ \cancel cosx}{4 + t {}^{2} } \times \frac{dt}{ \cancel cosx}$ $I= \int \frac{dt}{4+ t {}^{2} }$ $I= \int \frac{dt}{2 {}^{2} + t {}^{2} }$ use formula : $\int\:\frac{dx}{x{}^{2}+a{}^{2}}$ $I = \frac{1}{2} \tan {}^{ - 1} ( \frac{t}{2} ) + c$ Put t = sinx $I= \dfrac{1}{2} \tan( \frac{ \sin x}{2} ) + c$ __________________________ $2) I=\int \bf \dfrac{dx}{x(1 +ln {}^{2} x) }$ Let lnx = t ⇒xdt = dt $\int \bf \frac{dx}{x(1 + ln {}^{2}x) } = \int \frac{ \cancel xdt}{ \cancel x(1 + t {}^{2} )}$ $I = \int \frac{dt}{1 + t {}^{2} }$ $I= \tan {}^{ - 1} (t) + c$ put t = ln x $I= \tan {}^{ - 1} (lnx) + c$

18.

Please,help me!It is integral with substitution

Answer»

Question :

Integrate

$1) \int \dfrac{cosx \: dx}{4 + sin {}^{2}x}$

$2) \int \dfrac{dx}{x(1 + ln {}^{2} x)}$

Theory:

Integration is the inverse process of Differentiation.

•Methods of integration

Integration by substitution :

The GIVEN integral $\int f(x)dx$ can be transformed into another by changing the independent VARIABLE x to t by SUBSTITUTING x = g(t)

•Formula's used :

$1) \int \frac{1}{x {}^{2} + a {}^{2} } = \frac{1}{a} \tan {}^{ - 1} ( \frac{x}{a} )$

$2) \int \frac{dx}{1 + x {}^{2} } = \tan {}^{ - 1} (x)$

Solution :

$1) I= \int \bf \dfrac{cosx \: dx}{4 + sin {}^{2} x}$

Let sinx = t

$\frac{dy}{dx} = cosx\implies \frac{<klux>DT</klux>}{cosx} = dx$

$I= \int \frac{ \cancel cosx}{4 + t {}^{2} } \times \frac{dt}{ \cancel cosx}$

$I= \int \frac{dt}{4+ t {}^{2} }$

$I= \int \frac{dt}{2 {}^{2} + t {}^{2} }$

use formula : $\int\:\frac{dx}{x{}^{2}+a{}^{2}}$

$I = \frac{1}{2} \tan {}^{ - 1} ( \frac{t}{2} ) + c$

Put t = sinx

$I= \dfrac{1}{2} \tan( \frac{ \sin x}{2} ) + c$

__________________________

$2) I=\int \bf \dfrac{dx}{x(1 +ln {}^{2} x) }$

Let lnx = t ⇒xdt = dt

$\int \bf \frac{dx}{x(1 + ln {}^{2}x) } = \int \frac{ \cancel xdt}{ \cancel x(1 + t {}^{2} )}$

$I = \int \frac{dt}{1 + t {}^{2} }$

$I= \tan {}^{ - 1} (t) + c$

put t = ln x

$I= \tan {}^{ - 1} (lnx) + c$

Discussion

19.	In a test, (+4) marks are given for every correct answer and (-2)for every incorrect answer. Amit answered all the questions and scored 110 marks though he got 35 correct answers. How many questions has he attempted incorrectly?PLEASE GIVE STEP BY STEP EXPLANATION.THANK YOU
Answer» Answer: 15 INCORRECT answers. Step-by-step EXPLANATION: MARKS given for correct answers=+4 Thus marks given for 35 correct answers=(+4)*35=140 Total score=110 Marks given for incorrect answers= -2 Thus number of incorrect answers= 140-110=30 =30/(-2)=-15 Thus number of incorrect answers=15

19.

In a test, (+4) marks are given for every correct answer and (-2)for every incorrect answer. Amit answered all the questions and scored 110 marks though he got 35 correct answers. How many questions has he attempted incorrectly?PLEASE GIVE STEP BY STEP EXPLANATION.THANK YOU

Answer»

Answer:

15 INCORRECT answers.

Step-by-step EXPLANATION:

MARKS given for correct answers=+4

Thus marks given for 35 correct answers=(+4)*35=140

Total score=110

Marks given for incorrect answers= -2

Thus number of incorrect answers= 140-110=30

=30/(-2)=-15

Thus number of incorrect answers=15

Discussion

20.	Integrate it.asap.
Answer» <P>In thermodynamics, when we're interested at GASES, I know that the work done can be written to be −pdV for a reversible process (p is the pressure of the system, and V is the volume of the system). This is because dW=Fdx=−pAdx=−pd(Ax)=−pdV However, why is it not true ALSO that the work done is −pdV for non-reversible PROCESSES as WELL?

20.

Integrate it.asap.

Answer»

<P>In thermodynamics, when we're interested at GASES, I know that the work done can be written to be −pdV for a reversible process (p is the pressure of the system, and V is the volume of the system).

This is because

dW=Fdx=−pAdx=−pd(Ax)=−pdV

However, why is it not true ALSO that the work done is −pdV for non-reversible PROCESSES as WELL?

Discussion

21.	How to learn the sin cos tan cot sec cosec easily?
Answer» SOH CAH toa sin= o/h cos=a/h tan= o/a

21.

How to learn the sin cos tan cot sec cosec easily?

Answer»

SOH CAH toa

sin= o/h

cos=a/h

tan= o/a

Discussion

22.	5. In a particular year, the sugar production of a factory was 3,89,67 246 bags. Inthe following year, the sugar production increased by 8,34,678 bags. How manybags of sugar were produced by the factory in two years?
Answer» 3,89,67,246+(3,89,67,246+8,34,678)=7,87,69,160 Step-by-step explanation: as it is INCREASED in the no. of bags in a YEAR so we have to add increase in PREVIOUS YEARS production. Hope you got it!!

22.

5. In a particular year, the sugar production of a factory was 3,89,67 246 bags. Inthe following year, the sugar production increased by 8,34,678 bags. How manybags of sugar were produced by the factory in two years?

Answer»

3,89,67,246+(3,89,67,246+8,34,678)=7,87,69,160

Step-by-step explanation:

as it is INCREASED in the no. of bags in a YEAR so we have to add increase in PREVIOUS YEARS production.

Hope you got it!!

Discussion

23.	P(x) = ax2+ bx + c. if a + b + c = 0, then find one of its zero.
Answer» <P>Step-by-step EXPLANATION: here a+b+c=0 so the ROOT of p(X) is 1

23.

P(x) = ax2+ bx + c. if a + b + c = 0, then find one of its zero.

Answer»

<P>Step-by-step EXPLANATION:

here a+b+c=0

so the ROOT of p(X) is 1

Discussion

24.	Find LCM by using paper strips of different sizes
Answer» ANSWER: we USE LCM by FINDING numbers notveith strips

24.

Find LCM by using paper strips of different sizes

Answer»

ANSWER:

we USE LCM by FINDING numbers notveith strips

Discussion

25.	Find the third proportion of 14and3.5
Answer» Step-by-step EXPLANATION: LET 3RD PROPORTION be x 14/3.5=3.5/x => 14x = 3.5×3.5 => x = 3.5×3.5/14 => x = 0.5×1.75 => x = 0.875

25.

Find the third proportion of 14and3.5

Answer»

Step-by-step EXPLANATION:

LET 3RD PROPORTION be x

14/3.5=3.5/x

=> 14x = 3.5×3.5

=> x = 3.5×3.5/14

=> x = 0.5×1.75

=> x = 0.875

Discussion

26.	True or false: i) every natural number is a whole number
Answer» Step-by-step explanation: no because natural NUMBERS are 1,2,3,4,5,6.......infinite Whole numbers are 0,1,2,34,5,6.......infinite here you CHECK that 0 is a whole NUMBER but not a natural number

26.

True or false: i) every natural number is a whole number

Answer»

Step-by-step explanation:

no because

natural NUMBERS are 1,2,3,4,5,6.......infinite

Whole numbers are 0,1,2,34,5,6.......infinite

here you CHECK that 0 is a whole NUMBER but not a natural number

Discussion

27.	(-2+-3)+(+23-+26)+(29-12)-(-23+-35)+(234567890+234567890-1234567890+1234-3456789)
Answer» ANSWER: the RIGHT answer is -768887581. Step-by-step explanation: (-2+-3)= (-5) (-5)+(+23-+26)= -8 (-8)+(29-12)=9 9-(-23+-35)=84 84+(234567890+234567890-1234567890+1234-3456789)= -768887581

27.

(-2+-3)+(+23-+26)+(29-12)-(-23+-35)+(234567890+234567890-1234567890+1234-3456789)

Answer»

ANSWER:

the RIGHT answer is -768887581.

Step-by-step explanation:

(-2+-3)= (-5)

(-5)+(+23-+26)= -8

(-8)+(29-12)=9

9-(-23+-35)=84

84+(234567890+234567890-1234567890+1234-3456789)= -768887581

Discussion

28.	5÷x+y - 2÷x-y = -115÷x+y -7÷x-y = 10Solve the pair of equation
Answer» Answer: 62827353627272653 Step-by-step explanation: 62728 362671928264

28.

5÷x+y - 2÷x-y = -115÷x+y -7÷x-y = 10Solve the pair of equation

Answer»

Answer:

62827353627272653

Step-by-step explanation:

62728

362671928264

Discussion

29.	Express 472 as a power of its prime factors
Answer» Step-by-step explanation: 472= 2×2×2×59= 2^3×59

29.

Express 472 as a power of its prime factors

Answer»

Step-by-step explanation:

472= 2×2×2×59= 2^3×59

Discussion

30.	If y is dorectly proportional to 1/x and x= 2 when y=20 what is the valu of x and y=1.25?
Answer» ANSWER: Step-by-step EXPLANATION: y=K/x where k is any CONSTANT 20=k/2 So, k=202 k=40 y=40/x 1.25=40/x x=401.25 x=25

30.

If y is dorectly proportional to 1/x and x= 2 when y=20 what is the valu of x and y=1.25?

Answer»

ANSWER:

Step-by-step EXPLANATION:

y=K/x where k is any CONSTANT

20=k/2

So, k=20*2

k=40

y=40/x

1.25=40/x

x=40*1.25

x=25

Discussion

31.	1250g,2kg express the first quantity as the percentage of the second quantity
Answer» ANSWER: 62.5% is the answer for your question. Hope it helps MARK me as Brainliest Step-by-step explanation: 1250g......(1) 2000G.....(2) So if we use X method then, x% of 2000 = 1250 $\frac{x}{100} \times 2000 = 1250$ 20x=1250 x=1250/20 x=62.5 x%=62.5%

31.

1250g,2kg express the first quantity as the percentage of the second quantity

Answer»

ANSWER:

62.5% is the answer for your question.

Hope it helps MARK me as Brainliest

Step-by-step explanation:

1250g......(1)

2000G.....(2)

So if we use X method then,

x% of 2000 = 1250

$\frac{x}{100} \times 2000 = 1250$

20x=1250

x=1250/20

x=62.5

x%=62.5%

Discussion

32.	Branliest!!!! LAst of my points!
Answer» Answer: 40 SQ.in Step-by-step explanation: TOTAL surface area of the pyramid = area of 4 triangles+ area of square =4×1/2×3×4 + 4×4 sq.in =24 + 16 sq. in =40 sq. in please mark as BRAINLIEST

32.

Branliest!!!! LAst of my points!

Answer»

Answer:

40 SQ.in

Step-by-step explanation:

TOTAL surface area of the pyramid = area of 4 triangles+ area of square

=4×1/2×3×4 + 4×4 sq.in

=24 + 16 sq. in

=40 sq. in

please mark as BRAINLIEST

Discussion

33.	1+4=5252+5=123123+6=215215+8=?
Answer» ANSWER: what is this I can't UNDERSTAND

33.

1+4=5252+5=123123+6=215215+8=?

Answer»

ANSWER:

what is this I can't UNDERSTAND

Discussion

34.	Harmonic mean is used for calculating(a) Average growth rates of variables(b) Average speed of journey(c) Average rate of increase in net worth of a company(d) All the above 1 to 3.
Answer» ANSWER: In MATHEMATICS, the HARMONIC mean is one of SEVERAL kinds of average, and in particular, one of the Pythagorean means. Typically, it is appropriate for situations when the average of rates is desired. plz mark it as BRAINLIST.. follow me..☺☺✌✌

34.

Harmonic mean is used for calculating(a) Average growth rates of variables(b) Average speed of journey(c) Average rate of increase in net worth of a company(d) All the above 1 to 3.

Answer»

ANSWER:

In MATHEMATICS, the HARMONIC mean is one of SEVERAL kinds of average, and in particular, one of the Pythagorean means. Typically, it is appropriate for situations when the average of rates is desired.

plz mark it as BRAINLIST..

follow me..☺☺✌✌

Discussion

35.	Who can help me,please?
Answer» ANSWER: I don't no MATHS I can't HELP SORRY

35.

Who can help me,please?

Answer»

ANSWER:

I don't no MATHS I can't HELP SORRY

Discussion

36.	Find the roots of 4/x - 3= 5/2x + 3
Answer» ANSWER: Step-by-step explanation: 4/x-3=5/2x+3 4/x-5/2x=6 [42-51]2x=6 3/2x=6 1/2x=2 4x=1 x=1/4 hope it helps please MARK as BRAINLIEST

36.

Find the roots of 4/x - 3= 5/2x + 3

Answer»

ANSWER:

Step-by-step explanation:

4/x-3=5/2x+3

4/x-5/2x=6

[4*2-5*1]2x=6

3/2x=6

1/2x=2

4x=1

x=1/4

hope it helps

please MARK as BRAINLIEST

Discussion

37.	In a family of 5 children find the probability of one boy
Answer» Answer: 1/5 is the PROBABILITY of BOY

37.

In a family of 5 children find the probability of one boy

Answer»

Answer:

1/5 is the PROBABILITY of BOY

Discussion

38.	Answer plzzzzzzzzz??????
Answer» Answer: 6.2.0 It's the CORRECT Step-by-step EXPLANATION: PLEASE MARK BRAINLIEST

38.

Answer plzzzzzzzzz??????

Answer»

Answer:

6.2.0

It's the CORRECT

Step-by-step EXPLANATION:

PLEASE MARK BRAINLIEST

Discussion

39.	Answer plzzzzzzzzzzzzzzz????
Answer» Answer: 0 4 2 Ans... Step-by-step explanation: HINT 1 : (6,8,2) one number is CORRECT & well placed. Hint 2 : (6,1,4) one number is correct but wrong placed. Hint 3 : (2,0,6) Two number are correct but wrong placed. Hint 4: (7,3,8) Nothing is correct. Hint 5 : (7,8,0) one number is correct but wrong placed. From Hint 1 & 2 , we come to know that the number 6 is INCORRECT number. From Hint 3 , we come to know that 2 & 0 are correct numbers. From Hint 4 & 1 , we come to know that number 2 is correctly placed. Hence the number will be _ _ 2 From Hint 3, 4 & 5 we come to know that 0 is wrongly placed in (2,06) & (7,8,0) . Hence the number will be (0 _ 2) And from Hint 2 we come to know that the middle number is 4 ==================== Therefore the 3-digit number is ; 0 4 2 Read more on Brainly.in - brainly.in/question/1096434#readmore

39.

Answer plzzzzzzzzzzzzzzz????

Answer»

Answer:

0 4 2 Ans...

Step-by-step explanation:

HINT 1 : (6,8,2) one number is CORRECT & well placed.

Hint 2 : (6,1,4) one number is correct but wrong placed.

Hint 3 : (2,0,6) Two number are correct but wrong placed.

Hint 4: (7,3,8) Nothing is correct.

Hint 5 : (7,8,0) one number is correct but wrong placed.

From Hint 1 & 2 , we come to know that the number 6 is INCORRECT number.

From Hint 3 , we come to know that 2 & 0 are correct numbers.

From Hint 4 & 1 , we come to know that number 2 is correctly placed.

Hence the number will be _ _ 2

From Hint 3, 4 & 5 we come to know that 0 is wrongly placed in (2,06) & (7,8,0) .

Hence the number will be

(0 _ 2)

And from Hint 2 we come to know that the middle number is 4

====================

Therefore the 3-digit number is ;

0 4 2

Read more on Brainly.in - brainly.in/question/1096434#readmore

Discussion

40.	Integrate it.the best answer would be marked the brainliest.
Answer» ANSWER: here is the answer of the QUESTION

40.

Integrate it.the best answer would be marked the brainliest.

Answer»

ANSWER:

here is the answer of the QUESTION

Discussion

41.	Please give the full solution
Answer» ANSWER: answer is = a PLEASE NOTE about this SUPERMAN STORY

41.

Please give the full solution

Answer»

ANSWER:

answer is = a PLEASE NOTE about this SUPERMAN STORY

Discussion

42.	1 ko-fatato = 4rsT o onion=0.501kg Garlic=025Trout 10kg Rs10
Answer» SORRY mate didn't UNDERSTOOD ur question. plz mark as BRAINLIEST... and follow me....

42.

1 ko-fatato = 4rsT o onion=0.501kg Garlic=025Trout 10kg Rs10

Answer»

SORRY mate didn't UNDERSTOOD ur question.

plz mark as BRAINLIEST...

and follow me....

Discussion

43.	Who knows the integrals with substitution?
Answer» ANSWER: The substitution RULE is a TRICK for evaluating integrals. It is based on the following identity between differentials (where u is a function of x): du = u dx . HENCE we can write: ∫⭐

43.

Who knows the integrals with substitution?

Answer»

ANSWER:

The substitution RULE is a TRICK for evaluating integrals. It is based on the following identity between differentials (where u is a function of x): du = u dx . HENCE we can write: ∫⭐

Discussion

44.	10 POINTS BRANLIEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1
Answer» ANSWER: 8 cm² Step-by-step explanation: You WOULD do base · height divided by 3 to get the answer of 8 cm² Hey ;) Hope this HELPS...

44.

10 POINTS BRANLIEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1

Answer»

ANSWER:

8 cm²

Step-by-step explanation:

You WOULD do

base · height divided by 3 to get the answer of 8 cm²

Hey ;)

Hope this HELPS...

Discussion

45.	Mere pass 100 rupe hi 1 rupiy dena hi aur use jada mile ga aur mera bas 1 rupiy kam ho
Answer» Answer: 99 RUPEES. Step-by-step EXPLANATION:

45.

Mere pass 100 rupe hi 1 rupiy dena hi aur use jada mile ga aur mera bas 1 rupiy kam ho

Answer»

Answer:

99 RUPEES.

Step-by-step EXPLANATION:

Discussion

46.	Among how many people should 21 kg of sweets be distributed do that each get 3/4 kg
Answer» Answer: 28 Step-by-step explanation: LET US suppose x persons total SWEETS 21 kg each person will get 3/4 kg ==> x × 3/4 = 21 ==> x = 21× 4/3 x = 28

46.

Among how many people should 21 kg of sweets be distributed do that each get 3/4 kg

Answer»

Answer: 28

Step-by-step explanation:

LET US suppose x persons

total SWEETS 21 kg

each person will get 3/4 kg

==> x × 3/4 = 21

==> x = 21× 4/3

x = 28

Discussion

47.	Odd one out : 18,84,99,62,72
Answer» ANSWER: The odd one out is 18 Step-by-step EXPLANATION: This is because on a number line, it is NOWHERE near the other 4 numbers. Hey ;) Hope this helps... SORRY if it doesn't :/

47.

Odd one out : 18,84,99,62,72

Answer»

ANSWER:

The odd one out is 18

Step-by-step EXPLANATION:

This is because on a number line, it is NOWHERE near the other 4 numbers.

Hey ;)

Hope this helps...

SORRY if it doesn't :/

Discussion

48.	If rs 840 is divided between a and b in the ratio 3:4 then b's share is
Answer» Answer: 480 Step-by-step explanation: let x be the COMMON multiplier of a and b. so, acc. to given ratio, 3x + 4X =840 7x=840 x=120 so, b's share is 4x which results in 4 MULTIPLY 120=480

48.

If rs 840 is divided between a and b in the ratio 3:4 then b's share is

Answer»

Answer:

480

Step-by-step explanation:

let x be the COMMON multiplier of a and b.

so, acc. to given ratio,

3x + 4X =840

7x=840

x=120

so, b's share is 4x which results in 4 MULTIPLY 120=480

Discussion

49.	A-2= 6 solve this in trial and error method
Answer» $\huge {\red {\mathfrak{Question:-}}}$ a-2=6, solve this by TRIAL and ERROR method. $\huge {\pink {\mathfrak{Solution:-}}}$ Trial and error method : In trial and error method we put different VALUE of VARIABLE to find the EXACT value of variable. Take : Value of a=1 $\longrightarrow a- 2 = 6 \\ \\ \longrightarrow 1 - 2 = 6 \\ \\ \longrightarrow - 1 \neq 6$ Take : Value of a=2 $\longrightarrow a- 2 = 6 \\ \\ \longrightarrow 2 - 2 = 6 \\ \\ \longrightarrow 0 \neq 6$ Take : Value of a=3 $\longrightarrow a- 2 = 6 \\ \\ \longrightarrow 3 - 2 = 6 \\ \\ \longrightarrow 1 \neq 6$ Take : Value of a=4 $\longrightarrow a- 2 = 6 \\ \\ \longrightarrow 4- 2 = 6 \\ \\ \longrightarrow 2\neq 6$ Take : Value of a=5 $\longrightarrow a - 2 = 6 \\ \\ \longrightarrow 5 - 2 = 6 \\ \\ \longrightarrow 3\neq 6$ Take : Value of a=6 $\longrightarrow a - 2 = 6 \\ \\ \longrightarrow 6 - 2 = 6 \\ \\ \longrightarrow 4\neq 6$ Take :Value of a=7 $\longrightarrow a- 2 = 6 \\ \\ \longrightarrow 7- 2 = 6 \\ \\ \longrightarrow 5\neq 6$ Take : Value a=8 $\longrightarrow a- 2 = 6 \\ \\ \longrightarrow 8- 2 = 6 \\ \\ \longrightarrow 6= 6$ $\green{\therefore{\tt{The\:value\:of\:x=8}}}$

49.

A-2= 6 solve this in trial and error method

Answer»

$\huge {\red {\mathfrak{Question:-}}}$

a-2=6, solve this by TRIAL and ERROR method.

$\huge {\pink {\mathfrak{Solution:-}}}$

Trial and error method : In trial and error method we put different VALUE of VARIABLE to find the EXACT value of variable.

Take : Value of a=1

$\longrightarrow a- 2 = 6 \\ \\ \longrightarrow 1 - 2 = 6 \\ \\ \longrightarrow - 1 \neq 6$

Take : Value of a=2

$\longrightarrow a- 2 = 6 \\ \\ \longrightarrow 2 - 2 = 6 \\ \\ \longrightarrow 0 \neq 6$

Take : Value of a=3

$\longrightarrow a- 2 = 6 \\ \\ \longrightarrow 3 - 2 = 6 \\ \\ \longrightarrow 1 \neq 6$

Take : Value of a=4

$\longrightarrow a- 2 = 6 \\ \\ \longrightarrow 4- 2 = 6 \\ \\ \longrightarrow 2\neq 6$

Take : Value of a=5

$\longrightarrow a - 2 = 6 \\ \\ \longrightarrow 5 - 2 = 6 \\ \\ \longrightarrow 3\neq 6$

Take : Value of a=6

$\longrightarrow a - 2 = 6 \\ \\ \longrightarrow 6 - 2 = 6 \\ \\ \longrightarrow 4\neq 6$

Take :Value of a=7

$\longrightarrow a- 2 = 6 \\ \\ \longrightarrow 7- 2 = 6 \\ \\ \longrightarrow 5\neq 6$

Take : Value a=8

$\longrightarrow a- 2 = 6 \\ \\ \longrightarrow 8- 2 = 6 \\ \\ \longrightarrow 6= 6$

$\green{\therefore{\tt{The\:value\:of\:x=8}}}$

Discussion

50.	Find the roots of x(x+4)=12
Answer» ANSWER: X(x+4) =12 x²+4x=12 x²+4x-12=0 x²+6x-2x-12=0 x(x+6) -2(x+6) =0 (x+6) (x-2) =0 so then, x= -6 Or x=2 ans.......

50.

Find the roots of x(x+4)=12

Answer»

ANSWER:

X(x+4) =12

x²+4x=12

x²+4x-12=0

x²+6x-2x-12=0

x(x+6) -2(x+6) =0

(x+6) (x-2) =0

so then,

x= -6 Or x=2

ans.......

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

If A, B, C are inversible matrices then (ABC-1 =(a) A-B-c-1(b) B-C-A-o(c) CA-1B-0(d) CB-A-

A. 26B. 32C. 37D. 42

A person invested a certain sum for five years at the rate of r% per annum simple interest. If he had invested the same sum at the same rate compounded half yearly for one year, he would have received the same amount. Find the value of r.

Square root of 2.5 upto 3 decimal

Find the square root of the following upto three places of decimal l 2

Given two regression lines are 8x-10y+66=0; 40x-18y=214 and variance of x is 9 calculate the variance of y

If tanA=1/2 and tanB=1/3 then what is the value of 4A+4B=

If l and b are zeroes of the polynomial f (x) =4x power 2 -6x +2,find the value of l3 +b3

°°QUESTION:➡If l and b are zeroes of the POLYNOMIAL f (X) =4x power 2 -6x +2,find the value of L3 +b3...☢☢

°°TO FIND:➡l^3+b^3☢☢☢☢

STEP by step explanation↪

What is the simplest form of 22 / 143

16l²-9m²=?R=3.4 S=9.5 P=8.7

If a, B, C are in versicle mattresses then (ABC)-1 =

Plz.. ans me fast..​

The value of 5+(-1) does not lies betweenoptiona) 0 and -10b) 0 and 10c) -4 and -15d) -6 and 6​

The square shown is dilated by a scale factor of 2. The center of dilation is point C. Which shows the correct image, A’ ?

X3+3x2-7x-9 divided by x+1​

If we know that (x - 4 ) is a factor of a polynomial p(x) of degree 3 , what is the remainder of p(x) (÷) (x-4) ?a. 0 b. 1 c. 2 d.3 e. not enough information to find the remainder

Please,help me!It is integral with substitution

Question :

Theory:

•Formula's used :

Solution :

__________________________

In a test, (+4) marks are given for every correct answer and (-2)for every incorrect answer. Amit answered all the questions and scored 110 marks though he got 35 correct answers. How many questions has he attempted incorrectly?PLEASE GIVE STEP BY STEP EXPLANATION.THANK YOU

Integrate it.asap.​

How to learn the sin cos tan cot sec cosec easily?​

5. In a particular year, the sugar production of a factory was 3,89,67 246 bags. Inthe following year, the sugar production increased by 8,34,678 bags. How manybags of sugar were produced by the factory in two years?​

P(x) = ax2+ bx + c. if a + b + c = 0, then find one of its zero.

Find LCM by using paper strips of different sizes

Find the third proportion of 14and3.5

True or false: i) every natural number is a whole number

(-2+-3)+(+23-+26)+(29-12)-(-23+-35)+(234567890+234567890-1234567890+1234-3456789)

5÷x+y - 2÷x-y = -115÷x+y -7÷x-y = 10Solve the pair of equation

Express 472 as a power of its prime factors

If y is dorectly proportional to 1/x and x= 2 when y=20 what is the valu of x and y=1.25?

1250g,2kg express the first quantity as the percentage of the second quantity

Branliest!!!! LAst of my points!

1+4=5252+5=123123+6=215215+8=?

Harmonic mean is used for calculating(a) Average growth rates of variables(b) Average speed of journey(c) Average rate of increase in net worth of a company(d) All the above 1 to 3.​

Who can help me,please?

Find the roots of 4/x - 3= 5/2x + 3​

In a family of 5 children find the probability of one boy

Answer plzzzzzzzzz??????​

Answer plzzzzzzzzzzzzzzz????​

Integrate it.the best answer would be marked the brainliest.​

Please give the full solution

1 ko-fatato = 4rsT o onion=0.501kg Garlic=025Trout 10kg Rs10​

plz mark as BRAINLIEST...

Who knows the integrals with substitution?

The substitution RULE is a TRICK for evaluating integrals. It is based on the following identity between differentials (where u is a function of x): du = u dx . HENCE we can write: ∫⭐

10 POINTS BRANLIEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1

Hey ;)

Hope this HELPS...

Mere pass 100 rupe hi 1 rupiy dena hi aur use jada mile ga aur mera bas 1 rupiy kam ho

Among how many people should 21 kg of sweets be distributed do that each get 3/4 kg

Odd one out : 18,84,99,62,72

Hey ;)

Hope this helps...

SORRY if it doesn't :/

If rs 840 is divided between a and b in the ratio 3:4 then b's share is​

A-2= 6 solve this in trial and error method

Find the roots of x(x+4)=12

Plz.. ans me fast..

The value of 5+(-1) does not lies betweenoptiona) 0 and -10b) 0 and 10c) -4 and -15d) -6 and 6

X3+3x2-7x-9 divided by x+1

Integrate it.asap.

How to learn the sin cos tan cot sec cosec easily?

5. In a particular year, the sugar production of a factory was 3,89,67 246 bags. Inthe following year, the sugar production increased by 8,34,678 bags. How manybags of sugar were produced by the factory in two years?

Harmonic mean is used for calculating(a) Average growth rates of variables(b) Average speed of journey(c) Average rate of increase in net worth of a company(d) All the above 1 to 3.

Find the roots of 4/x - 3= 5/2x + 3

Answer plzzzzzzzzz??????

Answer plzzzzzzzzzzzzzzz????

Integrate it.the best answer would be marked the brainliest.

1 ko-fatato = 4rsT o onion=0.501kg Garlic=025Trout 10kg Rs10

If rs 840 is divided between a and b in the ratio 3:4 then b's share is