332354 + Interview Questions in Secondary School in Math

1.	Why we want to multiply with 100???
Answer» ANSWER: Because its easy Thanks

1.

Why we want to multiply with 100???

Answer»

ANSWER:

Because its easy

Thanks

Discussion

2.	Solve this question Root(32)^-3
Answer» ANSWER: $\sqrt[ - 3]{32} = \frac{1}{ \sqrt[3]{32} } = \frac{1}{ \sqrt[3]{2 \times 2 \times 2 \times 2 \times 2} } = \frac{1}{2 \sqrt[3]{4} }$

2.

Solve this question Root(32)^-3

Answer»

ANSWER:

$\sqrt[ - 3]{32} = \frac{1}{ \sqrt[3]{32} } = \frac{1}{ \sqrt[3]{2 \times 2 \times 2 \times 2 \times 2} } = \frac{1}{2 \sqrt[3]{4} }$

Discussion

3.	What value of ax-3 is a factor of (x)+x(2) -17x+a
Answer» Given, x-3 is a FACTOR of (x) + x(2) - 17x + a, so, x-3 = 0 => x = 3 now, p(3) = 3 + 3 * 2 - 17 *3 + a = 0 =>9 - 51 + a = 0 => a = 51 - 9 = 42 Ans:- Value of a is 42

3.

What value of ax-3 is a factor of (x)+x(2) -17x+a

Answer»

Given, x-3 is a FACTOR of (x) + x(2) - 17x + a,

so, x-3 = 0

=> x = 3

now,

p(3) = 3 + 3 * 2 - 17 *3 + a = 0

=>9 - 51 + a = 0

=> a = 51 - 9 = 42

Ans:- Value of a is 42

Discussion

4.	At a certain instant an auto driver is driving at a speed of 30km/hr then he uniformly accelerates the auto and after 2.5min,the speed of his auto becomes 60km/hr.What is the average speed of the auto? What is the value of uniform acceleration during the given interval of time
Answer» Answer: 25 m/s : average velocity Step-by-step explanation: the average speed of the auto would be v2 - v1 that is 50/3 -25/3 which is EQUAL to 25/3 m/s to find the acceleration, APPLY v=U +at where v = 60km/hr = 50/3 m/s ( we are taking this as v because the auto STOPS with this velocity ,I. e., final velocity) u= 30km/hr =25/3 m/s time = 2.5 MIN = 150 seconds.. just substitute and u will get the acceleration.. hope it helped. :))

4.

At a certain instant an auto driver is driving at a speed of 30km/hr then he uniformly accelerates the auto and after 2.5min,the speed of his auto becomes 60km/hr.What is the average speed of the auto? What is the value of uniform acceleration during the given interval of time

Answer»

Answer:

25 m/s : average velocity

Step-by-step explanation:

the average speed of the auto would be v2 - v1 that is 50/3 -25/3 which is EQUAL to 25/3 m/s

to find the acceleration, APPLY v=U +at

where v = 60km/hr = 50/3 m/s ( we are taking this as v because the auto STOPS with this velocity ,I. e., final velocity)

u= 30km/hr =25/3 m/s

time = 2.5 MIN = 150 seconds..

just substitute and u will get the acceleration..

hope it helped.

:))

Discussion

5.	Please answer me step by step clearly
Answer» Step-by-step explanation: (2xy-xy)(3xy-5) =xy (2-1)(3xy-5) =1XY (3xy-5) Open BRACKET.... xy 3xy-xy5 3x^2y^2-5xy So the answer is 3 x square y square -5xy or just xy (3xy-5) Hope it HELPS........

5.

Please answer me step by step clearly

Answer»

Step-by-step explanation:

(2xy-xy)(3xy-5)

=xy (2-1)(3xy-5)

=1XY (3xy-5)

Open BRACKET....

xy *3xy-xy*5

3x^2y^2-5xy

So the answer is 3 x square y square -5xy

or just

xy (3xy-5)

Hope it HELPS........

Discussion

6.	The reciprocal of dash does not exist
Answer» The reciprocal of ZERO does not exist Solution: Given that, We have to find the reciprocal of what NUMBER does not exist Reciprocal means inverse of a number For example: $Inverse\ of\ 2 = \frac{1}{2}$ Now, All numbers, including fractions, rational numbers, integers, ETC. have reciprocals EXCEPT 0 Thus, zero does not have a reciprocal because no real number multiplied by 0 produces 1 Therefore, 0 is the only number whose reciprocal does not exist Learn more: What is the reciprocal of the SUM of the reciprocals of 3/5 and 7/3 ? brainly.in/question/4010224 What will be the reciprocal of -6/11 , -8/5 brainly.in/question/7137133

6.

The reciprocal of dash does not exist

Answer»

The reciprocal of ZERO does not exist

Solution:

Given that,

We have to find the reciprocal of what NUMBER does not exist

Reciprocal means inverse of a number

For example:

$Inverse\ of\ 2 = \frac{1}{2}$

Now,

All numbers, including fractions, rational numbers, integers, ETC. have reciprocals EXCEPT 0

Thus, zero does not have a reciprocal because no real number multiplied by 0 produces 1

Therefore, 0 is the only number whose reciprocal does not exist

Learn more:

What is the reciprocal of the SUM of the reciprocals of 3/5 and 7/3 ?

brainly.in/question/4010224

What will be the reciprocal of -6/11 , -8/5

brainly.in/question/7137133

Discussion

7.	If x square +1 upon x square =7 find the value of x cube + 1 upon x cube
Answer» ANSWER:cghfjbvb Step-by-step EXPLANATION:

7.

If x square +1 upon x square =7 find the value of x cube + 1 upon x cube

Answer»

ANSWER:cghfjbvb

Step-by-step EXPLANATION:

Discussion

8.	Which least should be subtracted from 1000 so that the difference is exactly divisible by 35
Answer» ANSWER: REQUIRED no. 980 Step-by-step explanation: 1000÷35=Qusent 28 Remainder= 20 1000 - Remainder 1000 - 20 980

8.

Which least should be subtracted from 1000 so that the difference is exactly divisible by 35

Answer»

ANSWER:

REQUIRED no. 980

Step-by-step explanation:

1000÷35=Qusent 28

Remainder= 20

1000 - Remainder

1000 - 20

980

Discussion

9.	The mean of 5 numbers is 27 if one number is excluded their mean is 25 find the excluded number
Answer» $\mathfrak{\large{\underline{\underline{\pink{Answer :-}}}}}$ The Excluded number is 47 $\mathfrak{\large{\underline{\underline{\pink{Explanation :-}}}}}$ Given : Mean of 5 NUMBERS = 27 ONE number excluded the new mean = 25 To FIND : The Excluded number Solution : $\textbf{Case I}$ Here, Mean = 27 Observations = 5 Sum of Observations = x ★ $\boxed{\sf{\purple{Mean = \frac{Sum \: of \: Observations}{No. \: of \: Observations}}}}$ $\sf{\implies} \: 27 = \dfrac{x}{5}$ $\sf{\implies} \: 27 \times 5 = x$ $\sf{\implies} \: x = 135$ Sum of Observations in Case I is 135 $\rule{300}{1.5}$ $\textbf{Case II}$ Here, Mean = 22 Observations = 4 (one number Excluded) Consider Excluded number as y Sum of Observations = 135 - y ★ $\boxed{\sf{\purple{Mean = \frac{Sum \: of \: Observations}{No. \: of \: Observations}}}}$ $\sf{\implies} \:22 = \dfrac{135 - y}{4}$ $\sf{\implies} \:22 \times 4 = 135 - y$ $\sf{\implies} \:88 = 135 - y$ $\sf{\implies} \:y= 135 - 88$ $\sf{\implies} \:y = 47$ $\therefore$ The Excluded number is 47.

9.

The mean of 5 numbers is 27 if one number is excluded their mean is 25 find the excluded number

Answer»

$\mathfrak{\large{\underline{\underline{\pink{Answer :-}}}}}$

The Excluded number is 47

$\mathfrak{\large{\underline{\underline{\pink{Explanation :-}}}}}$

Given :

Mean of 5 NUMBERS = 27

ONE number excluded the new mean = 25

To FIND :

The Excluded number

Solution :

$\textbf{Case I}$

Here,

Mean = 27
Observations = 5
Sum of Observations = x

★ $\boxed{\sf{\purple{Mean = \frac{Sum \: of \: Observations}{No. \: of \: Observations}}}}$

$\sf{\implies} \: 27 = \dfrac{x}{5}$

$\sf{\implies} \: 27 \times 5 = x$

$\sf{\implies} \: x = 135$

Sum of Observations in Case I is 135

$\rule{300}{1.5}$

$\textbf{Case II}$

Here,

Mean = 22
Observations = 4 (one number Excluded)
Consider Excluded number as y
Sum of Observations = 135 - y

★ $\boxed{\sf{\purple{Mean = \frac{Sum \: of \: Observations}{No. \: of \: Observations}}}}$

$\sf{\implies} \:22 = \dfrac{135 - y}{4}$

$\sf{\implies} \:22 \times 4 = 135 - y$

$\sf{\implies} \:88 = 135 - y$

$\sf{\implies} \:y= 135 - 88$

$\sf{\implies} \:y = 47$

$\therefore$ The Excluded number is 47.

Discussion

10.	The line that passes through the point (1, 4) and is perpendicular to the line 3x + 2y - 5 = 0
Answer» Answer: LINE perpendicular to 3x+2y -5=0 is 2x-3y+k=0 it PASSES through (1,4) 2(1)-3(4)+k=0 2-7+k=0 k=5 hence required line is 2x-3y+5=0 *hope* it *HELPS* *you* *please* *mark* it as *brainliest* *and* *follow* me

10.

The line that passes through the point (1, 4) and is perpendicular to the line 3x + 2y - 5 = 0

Answer»

Answer:

LINE perpendicular to 3x+2y -5=0 is 2x-3y+k=0

it PASSES through (1,4)

2(1)-3(4)+k=0

2-7+k=0

k=5

hence required line is 2x-3y+5=0

hope it HELPS you please mark it as brainliest and follow me

Discussion

11.	What is the origin of statistics in italian language?
Answer» Answer: The language that came to be THOUGHT of as Italian developed in central TUSCANY and was first formalized in the early 14TH century through the WORKS of TUSCAN writer Dante Alighieri, written in his native Florentine.

11.

What is the origin of statistics in italian language?

Answer»

Answer:

The language that came to be THOUGHT of as Italian developed in central TUSCANY and was first formalized in the early 14TH century through the WORKS of TUSCAN writer Dante Alighieri, written in his native Florentine.

Discussion

12.	1/4 (y+5)(square )=9
Answer» ANSWER: y+5=+-6 step 1 if TAKEN -6 then, y=-11 step2 if taken 6 then, y=1

12.

1/4 (y+5)(square )=9

Answer»

ANSWER:

y+5=+-6

step 1

if TAKEN -6

then,

y=-11

step2

if taken 6

then,

y=1

Discussion

13.	Simplify (1/x+2)+(1/x+3)
Answer» ANSWER: i HOPE this HELP you .................

13.

Simplify (1/x+2)+(1/x+3)

Answer»

ANSWER:

i HOPE this HELP you .................

Discussion

14.	Please help me with the Problem
Answer» *SOLUTION ☺️* $= > \sqrt{2} + \frac{3}{ \sqrt{2} } = \frac{2 + 3}{ \sqrt{2} } \\ \\ = > \frac{5}{ \sqrt{2} } \\ \\ = > \frac{5}{ \sqrt{2} } \times \frac{ \sqrt{2} }{ \sqrt{2} } = \frac{5 \sqrt{2} }{2} \: \: \: which \: itself \: an \: irrational \: \: number \\ \\ = > hence \\ = > \sqrt{2} + \frac{3}{ \sqrt{2} } \: is \: an \: irrational \: number$ *HOPE it* *HELPS* ✔️☺️

14.

Please help me with the Problem

Answer»

SOLUTION ☺️

$= > \sqrt{2} + \frac{3}{ \sqrt{2} } = \frac{2 + 3}{ \sqrt{2} } \\ \\ = > \frac{5}{ \sqrt{2} } \\ \\ = > \frac{5}{ \sqrt{2} } \times \frac{ \sqrt{2} }{ \sqrt{2} } = \frac{5 \sqrt{2} }{2} \: \: \: which \: itself \: an \: irrational \: \: number \\ \\ = > hence \\ = > \sqrt{2} + \frac{3}{ \sqrt{2} } \: is \: an \: irrational \: number$

HOPE it HELPS ✔️☺️

Discussion

15.	Find the square root of 11 upon 2 decimal places
Answer» 3.32 is the SQUARE ROOT of 11 Hope it HELPS!!! :)

15.

Find the square root of 11 upon 2 decimal places

Answer»

3.32 is the SQUARE ROOT of 11

Hope it HELPS!!! :)

Discussion

16.	The lengths of the sides of a triangle are 5cm, 12cm, 13çm. Find the length of perpendicular from the opposite vertex to the side whose length is 13cm.
Answer» 4.61cm is the ANSWER to this QN

Discussion

17.	A,b andc are three angles ofa triangleifa_b=15°,b_c=30° , findabgle a , band c
Answer» ANSWER: HOPE this HELPS you a+b+c=180° if , b=15° and c=30° then a+15°+30°=180° a=180-45 a=135° plz MARK me BRAINLIST

17.

A,b andc are three angles ofa triangleifa_b=15°,b_c=30° , findabgle a , band c

Answer»

ANSWER:

HOPE this HELPS you

a+b+c=180°

if ,

b=15°

and c=30°

then

a+15°+30°=180°

a=180-45

a=135°

plz MARK me BRAINLIST

Discussion

18.	If x=2+√3, find (x+1/x)³
Answer» Step-by-step EXPLANATION: (x+1/x)^3 x=2+√3 (2+√3+1/2+√3)^3 (3+√3/2+√3)^3 (27+3√3+27√3+27)/(8+3√3+12√3+18) (54+30√3)/(26+15√3)

18.

If x=2+√3, find (x+1/x)³

Answer»

Step-by-step EXPLANATION:

(x+1/x)^3

x=2+√3

(2+√3+1/2+√3)^3

(3+√3/2+√3)^3

(27+3√3+27√3+27)/(8+3√3+12√3+18)

(54+30√3)/(26+15√3)

Discussion

19.	amit has 3 1/2 m long board of wood. he cuts out 4 pieces. of a piece of 5/6m is remaining, find the length of each rope
Answer» ANSWER: The LENGTH of each ROPE is 2/3m.

19.

amit has 3 1/2 m long board of wood. he cuts out 4 pieces. of a piece of 5/6m is remaining, find the length of each rope

Answer»

ANSWER:

The LENGTH of each ROPE is 2/3m.

Discussion

20.	Raian purchased a purse at 25% discount on its marked price but sold it at themarked price. Find the gain per cent of Rajan on this transaction
Answer» ANSWER: FIRST TELL me the MARKED PRICE??

20.

Raian purchased a purse at 25% discount on its marked price but sold it at themarked price. Find the gain per cent of Rajan on this transaction

Answer»

ANSWER:

FIRST TELL me the MARKED PRICE??

Discussion

21.	Simplify 1/x+2+1/x+3
Answer» Answer: 7 OKAY BYEEEEEEEEEEE.....

21.

Simplify 1/x+2+1/x+3

Answer»

Answer:

7 OKAY BYEEEEEEEEEEE.....

Discussion

22.	Find the division of following mixed fraction 4/3/5 divide 4/1/3
Answer» ANSWER: Step-by-step EXPLANATION:

22.

Find the division of following mixed fraction 4/3/5 divide 4/1/3

Answer»

ANSWER:

Step-by-step EXPLANATION:

Discussion

23.	The middle term in the expansion of [x+1÷X]10 IS
Answer» I don’t THINK you are 21

23.

The middle term in the expansion of [x+1÷X]10 IS

Answer»

I don’t THINK you are 21

Discussion

24.	In a auditorium the seats are so arranged that there are 10 seats in the first row,13 seats in the second,16 seats in the third etc. thereby increasing the number of seats by 3 every next row. if there are 64 seats in the last row, how many rows of seats are there in the auditorium? Also find the total number of seats in the auditorium
Answer» Answer: Total row - 19 Total seat - 703 Step-by-step explanation: Each row is increased by 3 seats . So row will be - 10 ,13 ,16 ,19 ,22 ,25 ,28 ,31 ,34 ,37 ,40 ,43 ,46 ,49 ,52 ,55 ,58 ,61 ,64 . Total number of row - 19 Total number of seats - 703. If this answer is helpful to you please like and mark brainliest.

24.

In a auditorium the seats are so arranged that there are 10 seats in the first row,13 seats in the second,16 seats in the third etc. thereby increasing the number of seats by 3 every next row. if there are 64 seats in the last row, how many rows of seats are there in the auditorium? Also find the total number of seats in the auditorium

Answer»

Answer:

Total row - 19

Total seat - 703

Step-by-step explanation:

Each row is increased by 3 seats .

So row will be - 10 ,13 ,16 ,19 ,22 ,25 ,28 ,31 ,34 ,37 ,40 ,43 ,46 ,49 ,52 ,55 ,58 ,61 ,64 .

Total number of row - 19

Total number of seats - 703.

If this answer is helpful to you please like and mark brainliest.

Discussion

25.	(ix) -25 by -14. multiply:----????
Answer» -25 × -14 = 350 Hope it HELPS!!! :)

25.

(ix) -25 by -14. multiply:----????

Answer»

-25 × -14 = 350

Hope it HELPS!!! :)

Discussion

26.	sunil and anil started a business and invested rs 120000 and rs 180000 respectively. after 3 month anil left the kapil joined by investing rs 150000. at the end of the year , they realized a profit of rs 148000. what is kapil's share ?
Answer» Answer: 5800 SHARE RUPEES kapils share

26.

sunil and anil started a business and invested rs 120000 and rs 180000 respectively. after 3 month anil left the kapil joined by investing rs 150000. at the end of the year , they realized a profit of rs 148000. what is kapil's share ?

Answer»

Answer:

5800 SHARE RUPEES kapils share

Discussion

27.	X. In a class of 12 students, 5 are boys and the rest are girls.Find the probability that a student selected will be a girl.
Answer» Step-by-step EXPLANATION: PLZZ MRK as brnliest...........

27.

X. In a class of 12 students, 5 are boys and the rest are girls.Find the probability that a student selected will be a girl.

Answer»

Step-by-step EXPLANATION:

PLZZ MRK as brnliest...........

Discussion

28.	(viii) 33 by - 1 multiply:----?
Answer» ANSWER: -33 coz MULTIPLYING by 1 gives the same answer

28.

(viii) 33 by - 1 multiply:----?

Answer»

ANSWER:

-33 coz MULTIPLYING by 1 gives the same answer

Discussion

29.	(vii) -12 by -17 multiply:-----????
Answer» SOLUTION ☺️ =) (-17)×(-12) =) 204. *HOPE it helps ✔️*

29.

(vii) -12 by -17 multiply:-----????

Answer»

SOLUTION ☺️

=) (-17)×(-12)

=) 204.

HOPE it helps ✔️

Discussion

30.	(vi) -51 by 0 multiply:-------????
Answer» ANSWER: it's 0 DEAR.........coz multiplying by 0 ALWAYS answer 0

30.

(vi) -51 by 0 multiply:-------????

Answer»

ANSWER:

it's 0 DEAR.........coz multiplying by 0 ALWAYS answer 0

Discussion

31.	2+√3If a+b√3= 2-√3
Answer» ANSWER: what is the QUESTION and we have to FIND

31.

2+√3If a+b√3= 2-√3

Answer»

ANSWER:

what is the QUESTION and we have to FIND

Discussion

32.	Pls read and answer the question given
Answer» Answer: 1:)27,39 2:) there is gap of odd NUMBERS I.e. odd n term +2 mark as BRAINLIST if you LIKE my answer

32.

Pls read and answer the question given

Answer»

Answer:

1:)27,39

2:) there is gap of odd NUMBERS I.e. odd n term +2

mark as BRAINLIST if you LIKE my answer

Discussion

33.	Two dice are thrown. find the probability of having even sum
Answer» ANSWER: 9/36=1/4 hope this answer USEFUL to you MATE

33.

Two dice are thrown. find the probability of having even sum

Answer»

ANSWER:

9/36=1/4

hope this answer USEFUL to you MATE

Discussion

34.	O) Write down three consecutive integers succeeding - 29.
Answer» ANSWER: the answer is : -28, -27, -26

34.

O) Write down three consecutive integers succeeding - 29.

Answer»

ANSWER:

the answer is : -28, -27, -26

Discussion

35.	मोहन अपने पुत्र से तीन गुना बड़ा है। यदि पांच साल बाद वह अपने पुत्र से ढाई गुना बड़ा राह जाता है, तो मोहन की वर्तमान आयु है।
Answer» Answer: 45 YEARS Step-by-step EXPLANATION: let present age of mohan's son be x. then mohan's present age = 3x Age of mohan's son after 5 yrs = (x+5) Age of mohan after 5 yrs= 5/2(x+5) Also age of mohan after 5 yrs = (3x+5) 5/2(x+5) = (3x+5) 5(x+5) = 2(3x+5) 5x+25 = 6x+10 25-10 = 6x-5x 15=x we have, x=15 therefore, the present age of mohan's son = x = 15 yrs present age of mohan = 3x = 3×15 = 45 years

35.

मोहन अपने पुत्र से तीन गुना बड़ा है। यदि पांच साल बाद वह अपने पुत्र से ढाई गुना बड़ा राह जाता है, तो मोहन की वर्तमान आयु है।

Answer»

Answer:

45 YEARS

Step-by-step EXPLANATION:

let present age of mohan's son be x.

then mohan's present age = 3x

Age of mohan's son after 5 yrs = (x+5)

Age of mohan after 5 yrs= 5/2(x+5)

Also age of mohan after 5 yrs = (3x+5)

5/2(x+5) = (3x+5)

5(x+5) = 2(3x+5)

5x+25 = 6x+10

25-10 = 6x-5x

15=x

we have, x=15

therefore, the present age of mohan's son = x = 15 yrs

present age of mohan = 3x = 3×15

= 45 years

Discussion

36.	1.multiply:------(\/)=43 by-13
Answer» 43 × -13 = -559 Hope it HELPS!!! :)

36.

1.multiply:------(\/)=43 by-13

Answer»

43 × -13 = -559

Hope it HELPS!!! :)

Discussion

37.	One inch = 2.54 cm . how many cm are there in 100 inches
Answer» Answer: in 100 INCH There is 254 CM Step by step :- 1 inch = 2.54 cm 100 inch = 2.54 × 100 = 254 cm

37.

One inch = 2.54 cm . how many cm are there in 100 inches

Answer»

Answer:

in 100 INCH There is 254 CM

Step by step :-

1 inch = 2.54 cm

100 inch = 2.54 × 100 = 254 cm

Discussion

38.	The graph of which function will have a maximum and a y-intercept of 4?f(x) = 4x2 + 6x – 1 f(x) = –4x2 + 8x + 5f(x) = –x2 + 2x + 4f(x) = x2 + 4x – 4
Answer» ANSWER: Step-by-step EXPLANATION: BRAINLIEST BRAINLIEST BRAINLIEST BRAINLIEST BRAINLIEST BRAINLIEST BRAINLIEST BRAINLIEST BRAINLIEST

38.

The graph of which function will have a maximum and a y-intercept of 4?f(x) = 4x2 + 6x – 1 f(x) = –4x2 + 8x + 5f(x) = –x2 + 2x + 4f(x) = x2 + 4x – 4

Answer»

ANSWER:

Step-by-step EXPLANATION:

BRAINLIEST BRAINLIEST BRAINLIEST BRAINLIEST BRAINLIEST BRAINLIEST BRAINLIEST BRAINLIEST BRAINLIEST

Discussion

39.	Thrice a number decreased by 5 is9
Answer» Step-by-step explanation: Let the number be x... THEREFORE, ACCORDING to the QUESTION : 3x-5 = 9 3x = 9+5 3x = 14 x= 14/3

39.

Thrice a number decreased by 5 is9

Answer»

Step-by-step explanation:

Let the number be x...

THEREFORE,

ACCORDING to the QUESTION :

3x-5 = 9

3x = 9+5

3x = 14

x= 14/3

Discussion

40.	If 8 concreteblocks weigh 84kg, what is the weight of one concrete block?
Answer» Answer: 10.5 STEP-by-step EXPLANATION: first step is DIVIDE 84 into 2 ans will come

40.

If 8 concreteblocks weigh 84kg, what is the weight of one concrete block?

Answer»

Answer:

10.5

STEP-by-step EXPLANATION:

first step is DIVIDE 84 into 2 ans will come

Discussion

41.	If x = √3-√2/√3+√2 and y=√3+√2/√3-√2, find the value of x^2+y^2+ xy
Answer» ANSWER: lamao Step-by-step EXPLANATION: LOL lol lol lol lol lol

41.

If x = √3-√2/√3+√2 and y=√3+√2/√3-√2, find the value of x^2+y^2+ xy

Answer»

ANSWER:

lamao

Step-by-step EXPLANATION:

LOL

lol

Discussion

42.	If alpha and bita are the zeroes of quadratic polynomial f(x) =6x^2-x-2,find the value of alpha/bita + bita /alpha.
Answer» ANSWER: i THINK this will HELP you

42.

If alpha and bita are the zeroes of quadratic polynomial f(x) =6x^2-x-2,find the value of alpha/bita + bita /alpha.

Answer»

ANSWER:

i THINK this will HELP you

Discussion

43.	Simplify (1 cube =2cube+3cube )1/2
Answer» 1 CUBE 1/2=2 cube 1/2+3 cube1/2 1/2=2221/2+333*1/2 1/2=8/2+27/2 1/2=(8+27)/2 1/2=35/2 it not SATISFY

Discussion

44.	Find degree of polynomial (x+1)(x2+x+1)
Answer» $(x + 1)( {x}^{2} + x + 1) \\ x( {x}^{2} + x + 1) + 1( {x}^{2} + x + 1) \\ {x}^{3} + {x}^{2} + x + {x}^{2} + x + 1 \\ {x}^{3} + {2x}^{2} + 2x + 1$ HENCE, POLYNOMIAL $(x + 1)( {x}^{2} + x + 1)$ has THREE DEGREE .

44.

Find degree of polynomial (x+1)(x2+x+1)

Answer»

$(x + 1)( {x}^{2} + x + 1) \\ x( {x}^{2} + x + 1) + 1( {x}^{2} + x + 1) \\ {x}^{3} + {x}^{2} + x + {x}^{2} + x + 1 \\ {x}^{3} + {2x}^{2} + 2x + 1$

HENCE, POLYNOMIAL $(x + 1)( {x}^{2} + x + 1)$ has THREE DEGREE .

Discussion

45.	Prove that 2 under root 3 upon 5 is irrational
Answer» We have to prove that 2√3 / 5 is an irrational number. Here we must prove it by a contradiction. To get a contradiction, FIRST we assume that 2√3 / 5 is a rational number. Now we represent 2√3 / 5 as a rational number by a letter. So let x = 2√3 / 5, where x is rational. So, consider this EQUALITY. x = 2√3 / 5 Multiply both sides by 5. 5x = 2√3 Now divide both sides by 2. 5x / 2 = √3 Consider this equality. At LHS, since x is rational, then so will be the LHS 5x / 2. But the RHS √3 is irrational. Here we actually see that √3 is written in p/q FORM. Hence PROVED that 2√3 / 5 is irrational.

45.

Prove that 2 under root 3 upon 5 is irrational

Answer»

We have to prove that 2√3 / 5 is an irrational number.

Here we must prove it by a contradiction.

To get a contradiction, FIRST we assume that 2√3 / 5 is a rational number.

Now we represent 2√3 / 5 as a rational number by a letter. So let x = 2√3 / 5, where x is rational.

So, consider this EQUALITY.

x = 2√3 / 5

Multiply both sides by 5.

5x = 2√3

Now divide both sides by 2.

5x / 2 = √3

Consider this equality. At LHS, since x is rational, then so will be the LHS 5x / 2. But the RHS √3 is irrational.

Here we actually see that √3 is written in p/q FORM.

Hence PROVED that 2√3 / 5 is irrational.

Discussion

46.	The height of a certain flag pole is 75 feet. Grease is applied to the pole. A monkey attempts to climb the pole. It climbs 5 feet every second but slips down 3 ft in the next second. When will the monkey reach the top of the flag pole? 75 seconds 71 seconds 38 seconds 36 seconds
Answer» ANSWER: he REACHES at the TOP in 38seconds

46.

The height of a certain flag pole is 75 feet. Grease is applied to the pole. A monkey attempts to climb the pole. It climbs 5 feet every second but slips down 3 ft in the next second. When will the monkey reach the top of the flag pole? 75 seconds 71 seconds 38 seconds 36 seconds

Answer»

ANSWER:

he REACHES at the TOP in 38seconds

Discussion

47.	The greatest number which on dividing 1657 and 2037 leaves remainders 6 and 5 respectively, is:
Answer» Step-by-step EXPLANATION: by SUBTRACTING DIVIDEND and REMAINDER so, 1657-6=1651 2037-5=2032

47.

The greatest number which on dividing 1657 and 2037 leaves remainders 6 and 5 respectively, is:

Answer»

Step-by-step EXPLANATION:

by SUBTRACTING DIVIDEND and REMAINDER

so,

1657-6=1651

2037-5=2032

Discussion

48.	Hii........ what is tradition of mathematics
Answer» Answer: TRADITIONAL mathematics (sometimes classical math education) was the PREDOMINANT method of mathematics education in the United States in the early-to-mid 20th century. This contrasts with non-traditional APPROACHES to math education.[1] Traditional mathematics education has been challenged by several reform movements over the last several decades, notably new math, a now largely abandoned and discredited set of alternative methods, and most RECENTLY reform or standards-based mathematics based on NCTM standards, which is federally supported and has been widely adopted, but subject to ongoing criticism. Hope it's help you mark me as BRAINLIEST

48.

Hii........ what is tradition of mathematics

Answer»

Answer:

TRADITIONAL mathematics (sometimes classical math education) was the PREDOMINANT method of mathematics education in the United States in the early-to-mid 20th century. This contrasts with non-traditional APPROACHES to math education.[1] Traditional mathematics education has been challenged by several reform movements over the last several decades, notably new math, a now largely abandoned and discredited set of alternative methods, and most RECENTLY reform or standards-based mathematics based on NCTM standards, which is federally supported and has been widely adopted, but subject to ongoing criticism.

Hope it's help you

mark me as BRAINLIEST

Discussion

49.	8. Find the total savings of a boy who saves(4x - 6y), (6x + 2y), (4y - x) and(y-2x) in four consecutive weeks.
Answer» ANSWER: aswdgyytn Step-by-step EXPLANATION:

49.

8. Find the total savings of a boy who saves(4x - 6y), (6x + 2y), (4y - x) and(y-2x) in four consecutive weeks.

Answer»

ANSWER:

aswdgyytn

Step-by-step EXPLANATION:

Discussion

50.	The incomes of A and B are in the ratio 9:7 and their expenditures are in the ratio of 4: 3. If each saves Rs 200, find their income (x = 200 y = 400) Rs 1800, Rs 1400
Answer» Let their salaries be 9x and 7x let their expenditure be 4y and 3y so, ATQ 9x-4y=200—(1) 7x-3y=200—(2) so, from (1) x=(200+4y)/9—(3) put x in (2) 7[(200+4y)/9]-3y=200 (1400+28y)/9-3y=200 (1400+28y-27y)/9=200 y+1400=1800 y=400 now put y in (3) x=(200+4×400)/9 x=(200+1600)/9 x=1800/9 x=200 so, salary of FIRST person=9×200=1800 rs salary of second person=7×200=1400 rs

50.

The incomes of A and B are in the ratio 9:7 and their expenditures are in the ratio of 4: 3. If each saves Rs 200, find their income (x = 200 y = 400) Rs 1800, Rs 1400

Answer»

Let their salaries be 9x and 7x

let their expenditure be 4y and 3y

so,

ATQ

9x-4y=200—(1)

7x-3y=200—(2)

so,

from (1)

x=(200+4y)/9—(3)

put x in (2)

7[(200+4y)/9]-3y=200

(1400+28y)/9-3y=200

(1400+28y-27y)/9=200

y+1400=1800

y=400

now put y in (3)

x=(200+4×400)/9

x=(200+1600)/9

x=1800/9

x=200

so,

salary of FIRST person=9×200=1800 rs

salary of second person=7×200=1400 rs

Discussion

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