332354 + Interview Questions in Secondary School in Math

1.	Find the number of solution for following linear equation 2x +4y= 16
Answer» Answer: Letting x=0 Then, 2(0)+4y=16 0+4y=16 y=16/4 y=4 Solution for this EQUATION (0,4) This is a linear equation in two variables so it ha infinite NUMBER of solutions. Hope It HELPS!! Plz mark it as the brainliest answer

1.

Find the number of solution for following linear equation 2x +4y= 16

Answer»

Answer:

Letting x=0

Then, 2(0)+4y=16

0+4y=16

y=16/4

y=4

Solution for this EQUATION (0,4)

This is a linear equation in two variables so it ha infinite NUMBER of solutions.

Hope It HELPS!!

Plz mark it as the brainliest answer

Discussion

2.	Subtract the following. 23-(-13)
Answer» HOPE this helps u 23-(-13) minus*minus = plus 23+13 = 36

2.

Subtract the following. 23-(-13)

Answer»

HOPE this helps u

23-(-13)

minus*minus = plus

23+13

= 36

Discussion

3.	Arrange the fractions in ascending order.28, 19, 37, 54
Answer» Answer: 19,28,37,54 Step-by-step explanation: Ascending order is a order in which it is ARRANGED from smaller numbers to GREATEST numbers. i.e. 19<28<37<54

3.

Arrange the fractions in ascending order.28, 19, 37, 54

Answer»

Answer:

19,28,37,54

Step-by-step explanation:

Ascending order is a order in which it is ARRANGED from smaller numbers to GREATEST numbers.

i.e.

19<28<37<54

Discussion

4.	Write r={(x,y),x∈A, y∈B, y is divisible by x } , where A={5,6,7,8,}, B={10,12,15,16,18} is roster form
Answer» ANSWER: Answer is GIVEN in question Step-by-step EXPLANATION: Given y is DIVISIBLE by X

4.

Write r={(x,y),x∈A, y∈B, y is divisible by x } , where A={5,6,7,8,}, B={10,12,15,16,18} is roster form

Answer»

ANSWER:

Answer is GIVEN in question

Step-by-step EXPLANATION:

Given y is DIVISIBLE by X

Discussion

5.	On solving a 2 X + 3 y equal to 18, x minus 2 y is equal to 2 we get
Answer» ANSWER X=6 Y=2... GET X out first equation no. 2

5.

On solving a 2 X + 3 y equal to 18, x minus 2 y is equal to 2 we get

Answer»

ANSWER

X=6

Y=2... GET X out first equation no. 2

Discussion

6.	Among 7/3, 7/9, 7/13, 7/19 the greatest fraction is
Answer» ANSWER: $\frac{7}{3}$ Step-by-step explanation: $\frac{7}{3} ,\frac{7}{9} ,\frac{7}{13} ,\frac{7}{19}$ $LCM of 3,9,13,19$ $=2223$ So, $\frac{5187}{2223} ,\frac{1729}{2223} ,\frac{1197}{2223} ,\frac{819}{2223}$ Largest is $\frac{5187}{2223}$ So, $\frac{7}{3}$ is the largest fraction among them Thank You Plz mark my answer as BRAINLIEST

6.

Among 7/3, 7/9, 7/13, 7/19 the greatest fraction is

Answer»

ANSWER:

$\frac{7}{3}$

Step-by-step explanation:

$\frac{7}{3} ,\frac{7}{9} ,\frac{7}{13} ,\frac{7}{19}$

$LCM of 3,9,13,19$ $=2223$

So,

$\frac{5187}{2223} ,\frac{1729}{2223} ,\frac{1197}{2223} ,\frac{819}{2223}$

Largest is $\frac{5187}{2223}$

So, $\frac{7}{3}$ is the largest fraction among them

Thank You

Plz mark my answer as BRAINLIEST

Discussion

7.	Number of zeroes of a linear polynomial *01infinite
Answer» $\color{green}\large\underline{\underline{Hello...}}$ No. of ZEROES of a LINEAR POLYNOMIAL : $1$ $\color{magenta}\large\boxed{\boxed{Be... Brainly...!!!}}$

7.

Number of zeroes of a linear polynomial *01infinite

Answer»

$\color{green}\large\underline{\underline{Hello...}}$

No. of ZEROES of a LINEAR POLYNOMIAL :

$1$

$\color{magenta}\large\boxed{\boxed{Be... Brainly...!!!}}$

Discussion

8.	The solution of the equation x + 11 = 0 is *
Answer» Answer: 0 Step-by-step explanation: 0+11=0 hope it HELPS you

8.

The solution of the equation x + 11 = 0 is *

Answer»

Answer:

0

Step-by-step explanation:

0+11=0

hope it HELPS you

Discussion

9.	Find a quadratic formula of zeros 5 and -1
Answer» $\color{green}\large\underline{\underline{Hello...}}$ GIVEN: $\alpha = 5 \: \: \: \: \: \: \beta = - 1$ $\color{blue}\large\underline{\underline{Answer:}}$ $sum = \alpha + \beta = 5 - 1 = 4$ $product \: = \alpha \beta = 5 \times - 1 = - 5$ QUADRATIC EQUATION: ${x}^{2} - ( \alpha + \beta )x + \alpha \beta$ ${x}^{2} - 4x - 5$ $\color{magenta}\large\boxed{\boxed{Be... Brainly...!!!}}$

9.

Find a quadratic formula of zeros 5 and -1

Answer»

$\color{green}\large\underline{\underline{Hello...}}$

GIVEN:

$\alpha = 5 \: \: \: \: \: \: \beta = - 1$

$\color{blue}\large\underline{\underline{Answer:}}$

$sum = \alpha + \beta = 5 - 1 = 4$

$product \: = \alpha \beta = 5 \times - 1 = - 5$

QUADRATIC EQUATION:

${x}^{2} - ( \alpha + \beta )x + \alpha \beta$

${x}^{2} - 4x - 5$

$\color{magenta}\large\boxed{\boxed{Be... Brainly...!!!}}$

Discussion

10.	Write down all between b81wnd99that end in 2 or 6
Answer» Answer: 82,86,92,96 Step-by-step EXPLANATION: so EASY *HOPE it HELPS you*

10.

Write down all between b81wnd99that end in 2 or 6

Answer»

Answer:

82,86,92,96

Step-by-step EXPLANATION:

so EASY

HOPE it HELPS you

Discussion

11.	Factorise 8 (x-3y²) +4(x-3y)
Answer» Step-by-step EXPLANATION: HOPE it's HELPS you MARK as BRAINLIST

11.

Factorise 8 (x-3y²) +4(x-3y)

Answer»

Step-by-step EXPLANATION:

HOPE it's HELPS you

12.	Please solve the question no.9 and 10
Answer» ANSWER: we know that (a+b)^2=a^2+b^2+2ab from this we can WRITE a^2+b^2=(a+b)^2-2ab we used this in 10TH q and answer of 10th is 37

Please solve the question no.9 and 10

Answer»

ANSWER:

we know that (a+b)^2=a^2+b^2+2ab

from this we can WRITE a^2+b^2=(a+b)^2-2ab

we used this in 10TH q

and answer of 10th is 37

Discussion

13.	If x + 4 = then find the value of x
Answer» ANSWER: hello Step-by-step EXPLANATION: Can you WRITE the question properly so that I can help you

13.

If x + 4 = then find the value of x

Answer»

ANSWER:

hello

Step-by-step EXPLANATION:

Can you WRITE the question properly so that I can help you

Discussion

14.	What is the numerical coefficient of -x^2y
Answer» Answer: 2 and 1 Step-by-step EXPLANATION: the numerical COEFFICIENT is NUMBER before the variable you have to terms in this question hope this HELPS u

14.

What is the numerical coefficient of -x^2y

Answer»

Answer:

2 and 1

Step-by-step EXPLANATION:

the numerical COEFFICIENT is NUMBER before the variable you have to terms in this question

hope this HELPS u

Discussion

15.	Number name on Indian system of 954362 and 18950049
Answer» Step-by-step EXPLANATION: ysvhehehdhdnddiydydbdmchcy MSGDTDTDY G vxbdh

15.

Number name on Indian system of 954362 and 18950049

Answer»

Step-by-step EXPLANATION:

ysvhehehdhdnddiydydbdmchcy

MSGDTDTDY G vxbdh

Discussion

16.	The mean age of 3 students was calculated to be 17 years when a fourth student's age was added, the mean age reduced to 16years.how old is he the fourth srudent.
Answer» Answer:- 13 years Explanation :- Let the total age of THREE students be x we KNOW that, mean = total SUM / total no. of obs ATQ, mean of 3 students => 17 years x/3 =17 => x = 51 •°• total age = 51 ATQ, fourth student is added to reduce mean age to 16 years let, the age of 4th student be y •°• (51+y)/4= 16 =>51+y = 64 =>y= 64-51 =>y= 13 Hence, the age of 4th student is 13 years.

16.

The mean age of 3 students was calculated to be 17 years when a fourth student's age was added, the mean age reduced to 16years.how old is he the fourth srudent.

Answer»

Answer:-

13 years

Explanation :-

Let the total age of THREE students be x

we KNOW that,

mean = total SUM / total no. of obs

ATQ,

mean of 3 students => 17 years

x/3 =17

=> x = 51

•°• total age = 51

ATQ,

fourth student is added to reduce mean age to 16 years

let, the age of 4th student be y

•°• (51+y)/4= 16

=>51+y = 64

=>y= 64-51

=>y= 13

Hence, the age of 4th student is 13 years.

Discussion

17.	Integration of x cube +1/x of dx
Answer» ANSWER: haaahhhhhhhhhhhhhhhhh

17.

Integration of x cube +1/x of dx

Answer»

ANSWER:

haaahhhhhhhhhhhhhhhhh

Discussion

18.	If X = √2 -1 then find the value of x^2 + 1/x^2
Answer» Solution:- *Given:- $\rm \: x = \sqrt{2} - 1$ To FIND; $\rm \: {x}^{2} + \frac{1}{ {x}^{2} }$ PUT* *the* *value* of x on *equation* $\rm \: ( \sqrt{2} - 1) {}^{2} + \frac{1}{ ( \sqrt{2} - 1) {}^{2} }$ *Using* *this* *identity* $\rm(a - b) {}^{2} = {a}^{2} + {b}^{2} - 2ab$ We *get, $\rm \: ( \sqrt{2} ) {}^{2} + 1 - 2 \sqrt{2} + \frac{1}{ ( \sqrt{2} ) {}^{2} + 1 - 2 \sqrt{2}}$ $\rm \: 3 - 2 \sqrt{2} + \frac{1}{ 3 - 2 \sqrt{2}}$ TAKING* *lcm* $\rm \frac{ (3 - 2 \sqrt{2})( 3 - 2 \sqrt{2} ) + 1}{ 3 - 2 \sqrt{2}}$ $\rm \: \frac{( 3 - 2 \sqrt{2}) {}^{2} + 1 }{ 3 - 2 \sqrt{2}}$ $\rm \: \frac{(3) {}^{2} + (2 \sqrt{2} ) {}^{2} - 2 \times 3 \times 2 \sqrt{2} + 1 }{ 3 - 2 \sqrt{2}}$ $\rm \: \frac{9 + 8 - 12 \sqrt{2} + 1 }{ 3 - 2 \sqrt{2}}$ $\rm \: \frac{18 - 12 \sqrt{2} }{ 3 - 2 \sqrt{2}}$ *Taking* *common* $\rm \: \frac{<klux>6</klux>( 3 - 2 \sqrt{2})}{ 3 - 2 \sqrt{2}}$ *Answer*:- 6

18.

If X = √2 -1 then find the value of x^2 + 1/x^2

Answer»

Solution:-

Given:-

$\rm \: x = \sqrt{2} - 1$

To FIND;

$\rm \: {x}^{2} + \frac{1}{ {x}^{2} }$

PUT the value of x on equation

$\rm \: ( \sqrt{2} - 1) {}^{2} + \frac{1}{ ( \sqrt{2} - 1) {}^{2} }$

Using this identity

$\rm(a - b) {}^{2} = {a}^{2} + {b}^{2} - 2ab$

We get,

$\rm \: ( \sqrt{2} ) {}^{2} + 1 - 2 \sqrt{2} + \frac{1}{ ( \sqrt{2} ) {}^{2} + 1 - 2 \sqrt{2}}$

$\rm \: 3 - 2 \sqrt{2} + \frac{1}{ 3 - 2 \sqrt{2}}$

TAKING lcm

$\rm \frac{ (3 - 2 \sqrt{2})( 3 - 2 \sqrt{2} ) + 1}{ 3 - 2 \sqrt{2}}$

$\rm \: \frac{( 3 - 2 \sqrt{2}) {}^{2} + 1 }{ 3 - 2 \sqrt{2}}$

$\rm \: \frac{(3) {}^{2} + (2 \sqrt{2} ) {}^{2} - 2 \times 3 \times 2 \sqrt{2} + 1 }{ 3 - 2 \sqrt{2}}$

$\rm \: \frac{9 + 8 - 12 \sqrt{2} + 1 }{ 3 - 2 \sqrt{2}}$

$\rm \: \frac{18 - 12 \sqrt{2} }{ 3 - 2 \sqrt{2}}$

Taking common

$\rm \: \frac{<klux>6</klux>( 3 - 2 \sqrt{2})}{ 3 - 2 \sqrt{2}}$

Answer:- 6

Discussion

19.	Using all or some of the digits 2, 3, 4 and 5, Edward writes numbers greater than 500 without repeating digits. For example, he might write 543.How many numbers does Edward write?
Answer» GIVEN: the digits 2, 3, 4 and 5 To find: how MANY numbers does Edward write? Solution: To form numbers greater than 500, in each number, we must take the digit 5 in an appropriate place because 2, 3, 4 < 5. The possible OUTCOMES are: (2, 3, 5) = 532, 523 (2, 4, 5) = 542, 524 (3, 4, 5) = 543, 534 (2, 3, 4, 5) = 2345, 2435, 2354, 2453, 3245, 3425, 3254, 3452, 4325, 4235, 4352, 4253, 5234, 5234, 5243, 5324, 5342, 5432 and 5423. Thus TOTAL number of requires outcomes is = 2 + 2 + 2 + 20 = 26 Answer: Edward WRITES 26 numbers.

19.

Using all or some of the digits 2, 3, 4 and 5, Edward writes numbers greater than 500 without repeating digits. For example, he might write 543.How many numbers does Edward write?

Answer»

GIVEN: the digits 2, 3, 4 and 5

To find: how MANY numbers does Edward write?

Solution:

To form numbers greater than 500, in each number, we must take the digit 5 in an appropriate place because 2, 3, 4 < 5.

The possible OUTCOMES are:
(2, 3, 5) = 532, 523
(2, 4, 5) = 542, 524
(3, 4, 5) = 543, 534
(2, 3, 4, 5) = 2345, 2435, 2354, 2453, 3245, 3425, 3254, 3452, 4325, 4235, 4352, 4253, 5234, 5234, 5243, 5324, 5342, 5432 and 5423.

Thus TOTAL number of requires outcomes is

= 2 + 2 + 2 + 20 = 26

Answer: Edward WRITES 26 numbers.

Discussion

20.	How to do 5x3 on the number line
Answer» Answer: 5×3 = 15 This type if you UNDERSTAND so please MARK me a BRAINLIST

20.

How to do 5x3 on the number line

Answer»

Answer:

5×3 = 15 This type

if you UNDERSTAND so please MARK me a BRAINLIST

Discussion

21.	Given below is a circle with centre o with arc
Answer» ANSWER: PLEASE MARK as BRAIN LIST

21.

Given below is a circle with centre o with arc

Answer»

ANSWER:

PLEASE MARK as BRAIN LIST

Discussion

22.	The difference between success and predecessor of any number is
Answer» ANSWER: The difference between success and predecessor of any NUMBER is 1

22.

The difference between success and predecessor of any number is

Answer»

ANSWER:

The difference between success and predecessor of any NUMBER is 1

Discussion

23.	A, a^2, a^3, a^4 is an A.P. or not please tell step by step
Answer» ANSWER: yes it's an AP. Step-by-step explanation: AP:- A SYSTEMATIC arrangement of sequence is A.P. systematic arrangement MEAN it should have a COMMON difference here the common difference is 'a :. It's an A.P

23.

A, a^2, a^3, a^4 is an A.P. or not please tell step by step

Answer»

ANSWER:

yes it's an AP.

Step-by-step explanation:

AP:- A SYSTEMATIC arrangement of sequence is A.P.

systematic arrangement MEAN it should have a COMMON difference here the common difference is 'a

:. It's an A.P

Discussion

24.	Find the value of p(x) =2+×+2×2_
Answer» Answer: we LET US p(x)=0 then we CALCULATE p(x)=2+0+2*2 :then p(x)=8

24.

Find the value of p(x) =2+×+2×2_

Answer»

Answer:

we LET US p(x)=0

then we CALCULATE

p(x)=2+0+2*2

:then p(x)=8

Discussion

25.	Simplify using exponential law-2/3^5 -3/14^28/15
Answer» Answer: by USING exponential form U will get the answer

25.

Simplify using exponential law-2/3^5 -3/14^28/15

Answer»

Answer:

by USING exponential form U will get the answer

Discussion

26.	Which of the terms 20,19 1/4,10 1/2, 17 3/4. is infinite negative term?
Answer» ANSWER: kdmsmssndhs8sjwannssm snsnsmsksjshdnssnmsnssnnsns ansnnsbsbsbsbsbsbdbdbdndnd smnsnsnsnsjsmsnsnsndndnndndiehrfhdns snnsnsjsnsjsjdndksiks aksmns jjsjsj us.sj usmwm ajwkwm wuw wue wu3 w wijwjwkw

26.

Which of the terms 20,19 1/4,10 1/2, 17 3/4. is infinite negative term?

Answer»

ANSWER:

kdmsmssndhs8sjwannssm
snsnsmsksjshdnssnmsnssnnsns
ansnnsbsbsbsbsbsbdbdbdndnd
smnsnsnsnsjsmsnsnsndndnndndiehrfhdns
snnsnsjsnsjsjdndksiks
aksmns
jjsjsj
us.sj
usmwm
ajwkwm
wuw

wue

wu3

w

wijwjwkw

Discussion

27.	B) (6x - 30)÷(2x - 10)
Answer» Step-by-step EXPLANATION: Simplifying 6x + -10 = 2x + -30 Reorder the terms: -10 + 6x = 2x + -30 Reorder the terms: -10 + 6x = -30 + 2x Solving -10 + 6x = -30 + 2x Solving for variable 'X'. Move all terms containing x to the left, all other terms to the right. Add '-2x' to each side of the equation. -10 + 6x + -2x = -30 + 2x + -2x Combine LIKE terms: 6x + -2x = 4x -10 + 4x = -30 + 2x + -2x Combine like terms: 2x + -2x = 0 -10 + 4x = -30 + 0 -10 + 4x = -30 Add '10' to each side of the equation. -10 + 10 + 4x = -30 + 10 Combine like terms: -10 + 10 = 0 0 + 4x = -30 + 10 4x = -30 + 10 Combine like terms: -30 + 10 = -20 4x = -20 Divide each side by '4'. x = -5 Simplifying x = -5

27.

B) (6x - 30)÷(2x - 10)

Answer»

Step-by-step EXPLANATION:

Simplifying

6x + -10 = 2x + -30

Reorder the terms:

-10 + 6x = 2x + -30

Reorder the terms:

-10 + 6x = -30 + 2x

Solving

-10 + 6x = -30 + 2x

Solving for variable 'X'.

Move all terms containing x to the left, all other terms to the right.

Add '-2x' to each side of the equation.

-10 + 6x + -2x = -30 + 2x + -2x

Combine LIKE terms: 6x + -2x = 4x

-10 + 4x = -30 + 2x + -2x

Combine like terms: 2x + -2x = 0

-10 + 4x = -30 + 0

-10 + 4x = -30

Add '10' to each side of the equation.

-10 + 10 + 4x = -30 + 10

Combine like terms: -10 + 10 = 0

0 + 4x = -30 + 10

4x = -30 + 10

Combine like terms: -30 + 10 = -20

4x = -20

Divide each side by '4'.

x = -5

Simplifying

x = -5

Discussion

28.	The sum of two integers is -50 .if one of them is 78,what is the other integer?
Answer» plthe SUM of two integers is -50 .if one of them is 78,what is the other INTEGER?

Discussion

29.	2power n can end with zero for any natural number n
Answer» Answer: If any number ends with 0 then it MUST be DIVISIBLE by 5 Hence its prime factorization must contain 5 But we know 4=2×2 So, there is no natural number n for which 4 n can END with 0.

29.

2power n can end with zero for any natural number n

Answer»

Answer:

If any number ends with 0 then it MUST be DIVISIBLE by 5

Hence its prime factorization must contain 5

But we know 4=2×2

So, there is no natural number n for which 4

n

can END with 0.

Discussion

30.	heroines formula ka question number 12.1 exercise question number fifth 12 ratio 15 ratio 25 receive
Answer» I THINK this MAY HELP you

30.

heroines formula ka question number 12.1 exercise question number fifth 12 ratio 15 ratio 25 receive

Answer»

I THINK this MAY HELP you

Discussion

31.	Ii.BCIf all the sides of a quadrilateral are produced in the same order (clockwise or anticlockwise),show that the quadrilateral formed by the bisectors of exterior angles is cyclic.Q.5. Solve the following questions. (Any one)i. Prove that 'If two chords of a circle intersect in the interior of a circle then the area of therectangle formed by the segments of one chord is equal to the area of similar rectangle formedby the other chord."ii. Prove that the chords corresponding to congruent arcs of congruent circles are congruent.
Answer» ANSWER: don't KNOW don't write this much big QUESTIONS it is very CONFUSING

31.

Ii.BCIf all the sides of a quadrilateral are produced in the same order (clockwise or anticlockwise),show that the quadrilateral formed by the bisectors of exterior angles is cyclic.Q.5. Solve the following questions. (Any one)i. Prove that 'If two chords of a circle intersect in the interior of a circle then the area of therectangle formed by the segments of one chord is equal to the area of similar rectangle formedby the other chord."ii. Prove that the chords corresponding to congruent arcs of congruent circles are congruent.

Answer»

ANSWER:

don't KNOW don't write this much big QUESTIONS it is very CONFUSING

Discussion

32.	What is the ans? (9r^5h^6/3rh^3)^2
Answer» ANSWER: if my answer HELPS you then,PLEASE MARK me as brainlist. thanks...!

32.

What is the ans? (9r^5h^6/3rh^3)^2

Answer»

ANSWER:

if my answer HELPS you then,PLEASE MARK me as brainlist.

thanks...!

Discussion

33.	A passenjer train Jakes 2 hrs less for a journeyof 300 km if its speed is increased by 5km/hfrom its usual spinal find its usceal speed
Answer» Answer: Northern Plains have FERTILE soil which is needed to grow CROPS. They are DRAINED by rivers Ganga, Brahmaputra, Indus. So, to feed country Northern Plains are necessary. The northern plains in general and Punjab in particular is the wheat BOWL of India.

33.

A passenjer train Jakes 2 hrs less for a journeyof 300 km if its speed is increased by 5km/hfrom its usual spinal find its usceal speed

Answer»

Answer:

Northern Plains have FERTILE soil which is needed to grow CROPS. They are DRAINED by rivers Ganga, Brahmaputra, Indus. So, to feed country Northern Plains are necessary. The northern plains in general and Punjab in particular is the wheat BOWL of India.

Discussion

34.	Question of chapter No men are foreignwhat should we remember when we are told to hate others?
Answer» Answer: The poet conveys that when we HATE OTHERS, we hate ourselves. No men are FOREIGNERS, or strangers. Step-by-step explanation: i hope it helps you

34.

Question of chapter No men are foreignwhat should we remember when we are told to hate others?

Answer»

Answer:

The poet conveys that when we HATE OTHERS, we hate ourselves. No men are FOREIGNERS, or strangers.

Step-by-step explanation:

i hope it helps you

Discussion

35.	Write the following equation in the from a+by+c=0and find value of a,b,c
Answer» Answer:where is the WHOLE question dude.... Step-by-step explanation: How will we explain U WITHOUT question?

35.

Write the following equation in the from a+by+c=0and find value of a,b,c

Answer»

Answer:where is the WHOLE question dude....

Step-by-step explanation:

How will we explain U WITHOUT question?

Discussion

36.	Simplify the following problems.(a) 2,800 - 400 x (350 = 50)
Answer» Answer: 15400 Step-by-step explanation: 2800-400= 2200 350=50 350/50 =7 2200 * 7 =15400

36.

Simplify the following problems.(a) 2,800 - 400 x (350 = 50)

Answer»

Answer:

15400

Step-by-step explanation:

2800-400= 2200

350=50

350/50

=7

2200 * 7

=15400

Discussion

37.	.Solve by the elimination method: 3x +4y =10, 2x -2y =2.
Answer» Step-by-step explanation: 3x+4y=10 2x-2y=2 multiply in EQUATIONS 2 by 2 4x-4y=4 3x+4y=10 7x=14 x=2 3(2)+4y=10 6+4y=10 4y=4 y=1

37.

.Solve by the elimination method: 3x +4y =10, 2x -2y =2.

Answer»

Step-by-step explanation:

3x+4y=10

2x-2y=2

multiply in EQUATIONS 2 by 2

4x-4y=4

3x+4y=10

7x=14

x=2

3(2)+4y=10

6+4y=10

4y=4

y=1

Discussion

38.	If (a) and (ß) are zeroes of the polynomial x^2-2x-8,then form a quadratic polynomial whose zeroes are 2/a and 2/ß. (a=alpha,ß=beta)
Answer» Answer: 2x² + x - 1 Step-by-step EXPLANATION: Polynomials in form of x^2 - Sx + P, represent S as sum of roots and P as PRODUCT of roots. Here, if a and ß are roots: • a + ß = 2 • aß = - 8 Let the required polynomial be x² - px + q, and 2/a & 2/ß are roots, so p = 2/a + 2/ß = 2(1/a + 1/ß) p = 2(a + ß)/aß = 2(2)/(-8) p = -1/2 Also, q = (2/a)(2/ß) q = 4(1/aß) q = 4{1/(-8)} = - 4/8 = -1/2 Therefore, polynomial is: x² - (-1/2)x + (-1/2) (2x² + x - 1)/2 Required polynomial is 2x² + x - 1

38.

If (a) and (ß) are zeroes of the polynomial x^2-2x-8,then form a quadratic polynomial whose zeroes are 2/a and 2/ß. (a=alpha,ß=beta)

Answer»

Answer:

2x² + x - 1

Step-by-step EXPLANATION:

Polynomials in form of x^2 - Sx + P, represent S as sum of roots and P as PRODUCT of roots.

Here, if a and ß are roots:

• a + ß = 2

• aß = - 8

Let the required polynomial be x² - px + q, and 2/a & 2/ß are roots, so

p = 2/a + 2/ß = 2(1/a + 1/ß)

p = 2(a + ß)/aß = 2(2)/(-8)

p = -1/2

Also,

q = (2/a)(2/ß)

q = 4(1/aß)

q = 4{1/(-8)} = - 4/8 = -1/2

Therefore, polynomial is:

x² - (-1/2)x + (-1/2)

(2x² + x - 1)/2

Required polynomial is 2x² + x - 1

Discussion

39.	Q.6.What is the degree offollowing surd ? 7⁴✓5
Answer» ANSWER: => 7×7×7×7✓5 =>2401✓5

39.

Q.6.What is the degree offollowing surd ? 7⁴✓5

Answer»

ANSWER:

=> 7×7×7×7✓5

=>2401✓5

Discussion

40.	राम ने साल के पहले सप्ताह में 5 की बचत की ओर सप्ताहिक बचत में एक रुपए 1.75 पैसे की वृद्धि की अगर सप्ताह में उसकी साप्ताहिक बचा 20.75 पैसे हो जाती है तो n ज्ञात कीजिए
Answer» Step-by-step explanation: दिया गया है :राम ने साल के पहले सप्ताह में 5 की बचत कीओर सप्ताहिक बचत में एक रुपए 1.75 पैसे की वृद्धि की अगर सप्ताह में उसकी साप्ताहिक बचा 20.75 पैसे हो जाती है तो, ज्ञात करना है: n ज्ञात कीजिए हल :मान लेते हैं प्रथम सप्ताह की बचत प्रथम पद है तथा प्रत्येक सप्ताह की वृद्धि सार्व अंतर है और कुछ सप्ताह के बाद उसकी सप्ताहिक बचत 20.75 हो जाती है\| तो इस प्रकार यह है एक समानांतर श्रेणी का निर्माण करेगा और हम n पदों के सूत्र में सभी मान रख के n मान निकाल लेंगे a= 5 d=1.75 $a_n = a + (n - 1)d \\ \\$ $20.75 = 5 + (n - 1)1.75 \\ \\ 20.75 - 5 = (n - 1)1.75 \\ \\ 15.75 = 1.75(n - 1) \\ \\n - 1 = \frac{15.75}{1.75} \\ \\ (n - 1) = \frac{1575}{175} \\ \\ n - 1 = 9 \\ \\ n = 10 \\ \\$ इस प्रकार 10 सप्ताह बाद उसकी सप्ताहिक बचत 20.75 हो जाएगी \| आशा है या उत्तर आपकी मदद करेगा\| To learn more on brainly: 1)एक स्कूल के विद्यार्थियों ने वायु प्रदूषण कम करने के लिए स्कूल के अंदर और बाहर पेड लगाने के बारे में सोचा। यह निर्णय लिय... brainly.in/question/12929847 2)FIND the number of terms of the AP -12, -9, -6 ...... , 21. If 1 is added to each term of this AP, then find the SUM of ... brainly.in/question/8420712

40.

राम ने साल के पहले सप्ताह में 5 की बचत की ओर सप्ताहिक बचत में एक रुपए 1.75 पैसे की वृद्धि की अगर सप्ताह में उसकी साप्ताहिक बचा 20.75 पैसे हो जाती है तो n ज्ञात कीजिए

Answer»

Step-by-step explanation:

दिया गया है :राम ने साल के पहले सप्ताह में 5 की बचत कीओर सप्ताहिक बचत में एक रुपए 1.75 पैसे की वृद्धि की अगर सप्ताह में उसकी साप्ताहिक बचा 20.75 पैसे हो जाती है तो,

ज्ञात करना है: n ज्ञात कीजिए

हल :मान लेते हैं प्रथम सप्ताह की बचत प्रथम पद है तथा प्रत्येक सप्ताह की वृद्धि सार्व अंतर है और कुछ सप्ताह के बाद उसकी सप्ताहिक बचत 20.75 हो जाती है|

तो इस प्रकार यह है एक समानांतर श्रेणी का निर्माण करेगा और हम n पदों के सूत्र में सभी मान रख के n मान निकाल लेंगे

a= 5

d=1.75

$a_n = a + (n - 1)d \\ \\$

$20.75 = 5 + (n - 1)1.75 \\ \\ 20.75 - 5 = (n - 1)1.75 \\ \\ 15.75 = 1.75(n - 1) \\ \\n - 1 = \frac{15.75}{1.75} \\ \\ (n - 1) = \frac{1575}{175} \\ \\ n - 1 = 9 \\ \\ n = 10 \\ \\$

इस प्रकार 10 सप्ताह बाद उसकी सप्ताहिक बचत 20.75 हो जाएगी |

आशा है या उत्तर आपकी मदद करेगा|

To learn more on brainly:

1)एक स्कूल के विद्यार्थियों ने वायु प्रदूषण कम करने के लिए स्कूल के अंदर और बाहर पेड लगाने के बारे में सोचा। यह निर्णय लिय...

brainly.in/question/12929847

2)FIND the number of terms of the AP -12, -9, -6 ...... , 21. If 1 is added to each term of this AP, then find the SUM of ...

brainly.in/question/8420712

Discussion

41.	What is \|x\| pls give right answer
Answer» in TEXTING LXL STANDS for LARGE EXTRA Large

41.

What is |x| pls give right answer

Answer»

in TEXTING LXL STANDS for LARGE EXTRA Large

Discussion

42.	Expand(root2X-3y)^2
Answer» ANSWER: $( \sqrt{2} x - 3y) {}^{2} = 2 {x}^{2} - 6 \sqrt{2} xy + 9 {y}^{2}$

42.

Expand(root2X-3y)^2

Answer»

ANSWER:

$( \sqrt{2} x - 3y) {}^{2} = 2 {x}^{2} - 6 \sqrt{2} xy + 9 {y}^{2}$

Discussion

43.	What must be subtracted from 4x^4-3X^3+2X^2+13X-4 , SP RESULT CAN BE DIVIDED BY X+1
Answer» ANSWER:-8 Step-by-step EXPLANATION:

43.

What must be subtracted from 4x^4-3X^3+2X^2+13X-4 , SP RESULT CAN BE DIVIDED BY X+1

Answer»

ANSWER:-8

Step-by-step EXPLANATION:

Discussion

44.	PQRS is a parellogram and px and rx are the vertices p and r on diagonal sq. Show that triangle pxq is congruent to triangle rys
Answer» Answer: => In triangles PQL and RSM RS=PQ ( opposite sides of a parallelogram) angle PQL= angle RSM ( alternate INT. ANGLES) angle PLQ=RMS=90 degree therefore triangle PQL is congruent to triangle RSM ( by AAS) Step-by-step explanation: FOLLOW ME.

44.

PQRS is a parellogram and px and rx are the vertices p and r on diagonal sq. Show that triangle pxq is congruent to triangle rys

Answer»

Answer:

=> In triangles PQL and RSM

RS=PQ ( opposite sides of a parallelogram)

angle PQL= angle RSM ( alternate INT. ANGLES) angle PLQ=RMS=90 degree

therefore triangle PQL is congruent to triangle RSM ( by AAS)

Step-by-step explanation:

FOLLOW ME.

Discussion

45.	verify the associative property for multiplication for the following rational numbers:7/8,56/35,14/-40
Answer» Answer:Rational Numbers – Chapter 3 – Class VIII February 17, 2016Ashoora Arif Definitions related to the Rational Numbers – Chapter 3: NATURAL numbers (N): The counting numbers {1, 2, 3, …}, are called natural numbers. Some authors include 0, so that the natural numbers are {0, 1, 2, 3, …}. Whole numbers(W): The numbers {0, 1, 2, 3, …}. Integers (Z): Positive and negative counting numbers, as well as zero:{…, -2, -1, 0, 1, 2,…}. Rational numbers (Q): Numbers that can be expressed as a ratio of an INTEGER to a non-zero integer. All integers are rational, but the converse is not true. Real numbers (R): Numbers that have decimal REPRESENTATIONS that have a finite or infinite sequence of digits to the right of the decimal point. All rational numbers are real, but the converse is not true. Step-by-step explanation:

45.

verify the associative property for multiplication for the following rational numbers:7/8,56/35,14/-40

Answer»

Answer:Rational Numbers – Chapter 3 – Class VIII

February 17, 2016Ashoora Arif

Definitions related to the Rational Numbers – Chapter 3:

NATURAL numbers (N): The counting numbers {1, 2, 3, …}, are called natural numbers. Some authors include 0, so that the natural numbers are {0, 1, 2, 3, …}.

Whole numbers(W): The numbers {0, 1, 2, 3, …}.

Integers (Z): Positive and negative counting numbers, as well as zero:{…, -2, -1, 0, 1, 2,…}.

Rational numbers (Q): Numbers that can be expressed as a ratio of an INTEGER to a non-zero integer. All integers are rational, but the converse is not true.

Real numbers (R): Numbers that have decimal REPRESENTATIONS that have a finite or infinite sequence of digits to the right of the decimal point. All rational numbers are real, but the converse is not true.

Step-by-step explanation:

Discussion

46.	Solve the quadratic equation 2x² - 7x + 3 = 0by using quadratic formula
Answer» Answer: x = 1/2 or x=3 Step-by-step explanation: 2x^2 - 7X + 3 = 2x^2 - 6X - x + 3 =0 2x (x-3)-1 (x -3)= 0 (2x -1 )(x -3)= 0 Thus x = 1/2 or x=3.

46.

Solve the quadratic equation 2x² - 7x + 3 = 0by using quadratic formula

Answer»

Answer:

x = 1/2 or x=3

Step-by-step explanation:

2x^2 - 7X + 3 =

2x^2 - 6X - x + 3 =0

2x (x-3)-1 (x -3)= 0

(2x -1 )(x -3)= 0

Thus

x = 1/2 or x=3.

Discussion

47.	Integration -y/x^2+y^2 dx
Answer» ANSWER: PLEASE MAKE me BRAINLIST FIRST

47.

Integration -y/x^2+y^2 dx

Answer»

ANSWER:

PLEASE MAKE me BRAINLIST FIRST

Discussion

48.	Lcm of 2197 solve it full step by step
Answer» Answer: 2197: 13 13 13 2197: 13 13 13 LCM: 13 13 13 Step-by-step EXPLANATION: The LEAST Common Multiple (LCM) is: 13 X 13 x 13 = 2197

48.

Lcm of 2197 solve it full step by step

Answer»

Answer:

2197: 13 13 13

LCM: 13 13 13

Step-by-step EXPLANATION:

The LEAST Common Multiple (LCM) is: 13 X 13 x 13 = 2197

Discussion

49.	Solve 0.054/3.73 using logarithm
Answer» Step-by-step EXPLANATION: MARK this ANSWER as brainlist as soon as its POSSIBLE

49.

Solve 0.054/3.73 using logarithm

Answer»

Step-by-step EXPLANATION:

MARK this ANSWER as brainlist as soon as its POSSIBLE

Discussion

50.	Incert five irrational number between 3√2 and 2√6
Answer» Answer: 3√2 = 4.242640687119285 2√6 = 4.898979485566356 4.353235934083426 , 4.4464565734525152 , 4.653414263263, 4.75747657342345 , 4.56094863407390763

50.

Incert five irrational number between 3√2 and 2√6

Answer»

Answer:

3√2 = 4.242640687119285

2√6 = 4.898979485566356

4.353235934083426 , 4.4464565734525152 , 4.653414263263, 4.75747657342345 , 4.56094863407390763

Discussion

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