332354 + Interview Questions in Secondary School in Math

1.	Simplify (1 / 32)3.
Answer» 1/32×3 =3/32 ANS.......

1.

Simplify (1 / 32)3.

Answer»

1/32×3

=3/32 ANS.......

Discussion

2.	Solve this query...
Answer» WELCOME to the CONCEPT of limits. it WOULD be EASY by l hospital rule yr answer is 1 I hope it help you ✌️✌️

2.

Solve this query...

Answer»

WELCOME to the CONCEPT of limits.

it WOULD be EASY by l hospital rule

yr answer is 1

I hope it help you ✌️✌️

Discussion

3.	Find c if the quadratic equation x^-2(c+1)x+c^=0 has real and equal roots
Answer» ANSWER: C=1/2 Step-by-step EXPLANATION: HOPE CONSTANT is C^2 here is my answer

3.

Find c if the quadratic equation x^-2(c+1)x+c^=0 has real and equal roots

Answer»

ANSWER:

C=1/2

Step-by-step EXPLANATION:

HOPE CONSTANT is C^2

here is my answer

Discussion

4.	3x-7/5-x+1/6=2x-2/12-1 answer is 11/4
Answer» ANSWER: YES ofcourse Step-by-step EXPLANATION:

4.

3x-7/5-x+1/6=2x-2/12-1 answer is 11/4

Answer»

ANSWER:

YES ofcourse

Step-by-step EXPLANATION:

Discussion

5.	If x =3+2 root 2 find x + 1/x
Answer» Step-by-step EXPLANATION: x=3+√2 x+1/x = 3+2√2 + 1/3+2√2 rationalize:- 1/3+2√2 × 3-2√2/3-2√2 = 3-2√2/9-8 = 3-2√2 3+2√2 + 3-2√2 =6

5.

If x =3+2 root 2 find x + 1/x

Answer»

Step-by-step EXPLANATION:

x=3+√2

x+1/x = 3+2√2 + 1/3+2√2

rationalize:-

1/3+2√2 × 3-2√2/3-2√2 =

3-2√2/9-8 = 3-2√2

3+2√2 + 3-2√2

=6

Discussion

6.	Construct a angle ABC , when AB = 6.0 cm , BC = 8.0 cm , AC = 7.5 cm
Answer» Step-by-step explanation: Steps of construction: (a) Draw a line segment BC = 6 cm. (b) Taking B as centre and radius 2.5 cm, draw an arc. (c) Similarly, taking C as centre and radius 6.5 cm, draw another arc which intersects first arc at point A. (d) Join AB and AC. (e) Measure angle B with the help of PROTRACTOR. It is the required Δ ABC where ∠ B = 80°. I hope it helps you!! MARK me on brainliest plzzzzz and follow me please

6.

Construct a angle ABC , when AB = 6.0 cm , BC = 8.0 cm , AC = 7.5 cm

Answer»

Step-by-step explanation:

Steps of construction:

(a) Draw a line segment BC = 6 cm.

(b) Taking B as centre and radius 2.5 cm, draw an arc.

(c) Similarly, taking C as centre and radius 6.5 cm, draw another arc which intersects first arc at point A.

(d) Join AB and AC.

(e) Measure angle B with the help of PROTRACTOR. It is the required Δ ABC where ∠ B = 80°.

I hope it helps you!!

MARK me on brainliest plzzzzz

and follow me please

Discussion

7.	0.271 Find po), p(1), p(-2) for the following polynomials:i) px) 10x - 4x?-3ii) py)(+2)(y-2)
Answer» <P>Answer: +2,-8 Step-by-step EXPLANATION: p(1)= 10(1)-4(1)×-3 p(1) = 10-12 p(1) =2 p(-2) = (2)(-2-2) p(-2) =(2)(-4) p(-2) =-8

7.

0.271 Find po), p(1), p(-2) for the following polynomials:i) px) 10x - 4x?-3ii) py)(+2)(y-2)

Answer»

<P>Answer:

+2,-8

Step-by-step EXPLANATION:

p(1)= 10(1)-4(1)×-3

p(1) = 10-12

p(1) =2

p(-2) = (2)(-2-2)

p(-2) =(2)(-4)

p(-2) =-8

Discussion

8.	(2root2_root6)(2root2+root6
Answer» ANSWER: this is the answer by MATH

8.

(2root2_root6)(2root2+root6

Answer»

ANSWER:

this is the answer by MATH

Discussion

9.	A gift pack of chips contains 2 cheese and onion, 2 plain salted, 3 masala munch and 1 pudina. Tanya takes out a pack of chips without looking. What is the chance that she picks.a) plain salted b) Masala c) cheese and onion d) pudina
Answer» ANSWER: Step-by-step EXPLANATION: (a)2/8=1/4 (B)3/8 (C)3/6=1/2 (d)1/8

9.

A gift pack of chips contains 2 cheese and onion, 2 plain salted, 3 masala munch and 1 pudina. Tanya takes out a pack of chips without looking. What is the chance that she picks.a) plain salted b) Masala c) cheese and onion d) pudina

Answer»

ANSWER:

Step-by-step EXPLANATION:

(a)2/8=1/4

(B)3/8

(C)3/6=1/2

(d)1/8

Discussion

10.	22-1\4{16-(8÷4+2)} simplyfy the numbers
Answer» Step-by-step EXPLANATION: according to bodmas B brackets O of D division M multiplication A additional S substraction use the bodmas theory which means that brackets are solved first,when there is no SIZE between the bracket there will be multiplication after brackets division is solved then multiplication,then ADDITION,then substraction.

10.

22-1\4{16-(8÷4+2)} simplyfy the numbers

Answer»

Step-by-step EXPLANATION:

according to bodmas

B brackets

O of

D division

M multiplication

A additional

S substraction

use the bodmas theory which means that brackets are solved first,when there is no SIZE between the bracket there will be multiplication

after brackets division is solved then multiplication,then ADDITION,then substraction.

Discussion

11.	Evaluate = -7 by 4+5 by 3+ -5 by 6 +1 by 3+ -1 by 2
Answer» HEYA HOPE it HELPS you ...

11.

Evaluate = -7 by 4+5 by 3+ -5 by 6 +1 by 3+ -1 by 2

Answer»

HEYA

HOPE it HELPS you ...

Discussion

12.	Each side of a square is 5 whole 2 upon 3 metre long find its area
Answer» $side = 5 \frac{2}{3} = \frac{17}{3 } \\ area = side \times side \\ \frac{17}{3} \times \frac{17}{3} = \frac{289}{9}$

12.

Each side of a square is 5 whole 2 upon 3 metre long find its area

Answer»

$side = 5 \frac{2}{3} = \frac{17}{3 } \\ area = side \times side \\ \frac{17}{3} \times \frac{17}{3} = \frac{289}{9}$

Discussion

13.	Find three irrational numbers between 5\7 and 3\11
Answer» ANSWER:- (1) 38/77 (2) 93/154 (3) 203/308

13.

Find three irrational numbers between 5\7 and 3\11

Answer»

ANSWER:-

(1) 38/77

(2) 93/154

(3) 203/308

Discussion

14.	10,-5,-3,0,5In aseending order
Answer» Answer: 0,3,5,5,10.is the ASCENDING ORDER

14.

10,-5,-3,0,5In aseending order

Answer»

Answer:

0,3,5,5,10.is the ASCENDING ORDER

Discussion

15.	I roll a die and if 1,2,3 comes you get 1 point and if 4,5,6 comes
Answer» ANSWER: I THINK so FOUR POINTS.

15.

I roll a die and if 1,2,3 comes you get 1 point and if 4,5,6 comes

Answer»

ANSWER:

I THINK so FOUR POINTS.

Discussion

16.	The difference between the place value and face value of 8 in 357864
Answer» ANS..800_8=792 .....

Discussion

17.	21root12 / 10root27
Answer» ANSWER: , Step-by-step EXPLANATION: the answer is 42/30 = 1.4

17.

21root12 / 10root27

Answer»

ANSWER:

,

Step-by-step EXPLANATION:

the answer is 42/30 = 1.4

Discussion

18.	Step by step solution plz
Answer» ANSWER: X^2+6x-4 Step-by-step explanation: Alpha+beta=-6 alpha×beta=-4 So, by 5he FORMULA of quadratic polynomial x^2-(SUM of zeroes)x+(Product of zeroes) x^2+6x-4 <----- This is the quadratic polynomial.

18.

Step by step solution plz

Answer»

ANSWER:

X^2+6x-4

Step-by-step explanation:

Alpha+beta=-6

alpha×beta=-4

So, by 5he FORMULA of quadratic polynomial

x^2-(SUM of zeroes)x+(Product of zeroes)

x^2+6x-4 <----- This is the quadratic polynomial.

Discussion

19.	AB is the diameter of the circle in following figure. The value of y is
Answer» your FIGURE is not VISIBLE PROPERLY so ASK the QUESTION again

Discussion

20.	I think it is challenging question
Answer» The PERCENTAGE I got is wrong. Sorry my ANSWER is wrong so I can't give

Discussion

21.	the particle moves in the xy plane according to the law x=kt and y =kt(1-at),where k and a are positive constants an t is time . what is the equation of trajectory of the particle
Answer» Answer: Parabola Step-by-step explanation: The particle is moving in the plane = According to the law the GIVEN equations are X=kt and y =kt(1-at) where K and a are positive constants an t is time Thus - x = kt , y = kt (1−αt) Solving on both the SIDES - y = kt−kαt² y = x−kαt² y = x − kαx²k² It is an EQUATION of parabola Hence, the trajectory of the particle is an equation of parabola.

21.

the particle moves in the xy plane according to the law x=kt and y =kt(1-at),where k and a are positive constants an t is time . what is the equation of trajectory of the particle

Answer»

Answer:

Parabola

Step-by-step explanation:

The particle is moving in the plane =

According to the law the GIVEN equations are X=kt and y =kt(1-at)

where K and a are positive constants an t is time

Thus -

x = kt , y = kt (1−αt)

Solving on both the SIDES -

y = kt−kαt²

y = x−kαt²

y = x − kαx²k²

It is an EQUATION of parabola

Hence, the trajectory of the particle is an equation of parabola.

Discussion

22.	Find the five rational numbers in between:- (a) – 6, - 5 (b) 2/3 , 3
Answer» Answer: a. -56=30 -66=36 rational numbers between is 31,32,33,34,35 b. 2/3,3/1 LCM =3 33=9 13=3 rational number betwee2/3,9/3is 3/3,4/3,5/3,6/3,7/3

22.

Find the five rational numbers in between:- (a) – 6, - 5 (b) 2/3 , 3

Answer»

Answer:

a. -5*6=30

-6*6=36

rational numbers between is

31,32,33,34,35

b. 2/3,3/1

LCM =3

3*3=9

1*3=3

rational number betwee2/3,9/3is

3/3,4/3,5/3,6/3,7/3

Discussion

23.	4/7of birthday cake was eaten on your birthday .the next day dad ate 1/2of what was left .you get to finish the cake , how much cake is left
Answer» Answer: 1/14 Step-by-step explanation: 4/7-1/2= LCM of DENOMINATOR =14 4x2/7x2 - 1x7/2x7 8/14 - 7/14 1/14

23.

4/7of birthday cake was eaten on your birthday .the next day dad ate 1/2of what was left .you get to finish the cake , how much cake is left

Answer»

Answer:

1/14

Step-by-step explanation:

4/7-1/2=

LCM of DENOMINATOR =14

4x2/7x2 - 1x7/2x7

8/14 - 7/14

1/14

Discussion

24.	Imagine that, you went for a summer holiday trip along with your family to visithistorical places. As a part of it, you went to Taj Mahal in AGRA. While visiting it, supposeyour grandmother asked you to measure the height of Taj Mahal. As a mathematics student,how do you measure it? What are the tools and principles you use?Guide lines:1. Write the different mathematical shapes you observed on the historical monuments.2. Mention the simple tools used to measure the height of the Taj Mahal.3. Explain the mathematical concepts used in measuring the height.4. Give your conclusion.
Answer» ANSWER: Step-by-step explanation: To measure the height of tajmahal as a visitor I will look into the direction of SHADOW of Tajmahal and STAND in such a way between Tajmahal & its shadow such that my shadow end POINT and Tajmahal shadow end point matches Now measure Length of my shadow & my height Tanθ = My height / My shadow Length θ = Angle of elevation => now height of Tajmahal = Tajmahal Shadow length * Tanθ

24.

Imagine that, you went for a summer holiday trip along with your family to visithistorical places. As a part of it, you went to Taj Mahal in AGRA. While visiting it, supposeyour grandmother asked you to measure the height of Taj Mahal. As a mathematics student,how do you measure it? What are the tools and principles you use?Guide lines:1. Write the different mathematical shapes you observed on the historical monuments.2. Mention the simple tools used to measure the height of the Taj Mahal.3. Explain the mathematical concepts used in measuring the height.4. Give your conclusion.

Answer»

ANSWER:

Step-by-step explanation:

To measure the height of tajmahal as a visitor

I will look into the direction of SHADOW of Tajmahal

and STAND in such a way between Tajmahal & its shadow

such that my shadow end POINT and Tajmahal shadow end point matches

Now measure Length of my shadow & my height

Tanθ = My height / My shadow Length

θ = Angle of elevation

=> now height of Tajmahal = Tajmahal Shadow length * Tanθ

Discussion

25.	a 2 digit number is multiplied by 3,then 7,then 13,then 37 will give 383838 then the 2 digit number is
Answer» Answer: 38 Step-by-step explanation: 3713*37a=383838 10101a=383838 a=38

25.

a 2 digit number is multiplied by 3,then 7,then 13,then 37 will give 383838 then the 2 digit number is

Answer»

Answer:

38

Step-by-step explanation:

3*7*13*37a=383838

10101a=383838

a=38

Discussion

26.	What is the probability of getting a prime number when a die is thrown once?
Answer» ANSWER: the answer is 1/2 Step-by-step EXPLANATION: HOPE this MAY HELP you

26.

What is the probability of getting a prime number when a die is thrown once?

Answer»

ANSWER:

the answer is 1/2

Step-by-step EXPLANATION:

HOPE this MAY HELP you

Discussion

27.	What should I learn to make calculation faster in class 10
Answer»

Discussion

28.	A train covers 132km at uniform speed. If the speed of train is reduce by 11 then it would take 1 hr less. find the speed of train
Answer» Answer: 44 Step-by-step EXPLANATION:

28.

A train covers 132km at uniform speed. If the speed of train is reduce by 11 then it would take 1 hr less. find the speed of train

Answer»

Answer:

44

Step-by-step EXPLANATION:

Discussion

29.	Find HCF of 90 and 126 by aquatic division algorithm find their LCM and verify the relationship between themAns 18Relationship 11340
Answer» Hey DEAR...!!! Here's UR answer... Step by step... Hope it HELPS u nd PLSSS mark it as BRAINLIEST...!!!

29.

Find HCF of 90 and 126 by aquatic division algorithm find their LCM and verify the relationship between themAns 18Relationship 11340

Answer»

Hey DEAR...!!!

Here's UR answer... Step by step...

Hope it HELPS u nd PLSSS mark it as BRAINLIEST...!!!

Discussion

30.	Mode occurs maximum timesvin the groups true /false
Answer» ANSWER: I GUESS FALSE.........

30.

Mode occurs maximum timesvin the groups true /false

Answer»

ANSWER:

I GUESS FALSE.........

Discussion

31.	O y tane ycose +2x=00dyde
Answer» Answer: what??? Step-by-step EXPLANATION: what do U mean PLEASE tell clearly so that I can answer you

31.

O y tane ycose +2x=00dyde

Answer»

Answer:

what???

Step-by-step EXPLANATION:

what do U mean

PLEASE tell clearly so that I can answer you

Discussion

32.	Solve (x^2 – 3x)² – 16 (x² – 3x) – 36 = 0.
Answer» ANSWER: Step-by-step EXPLANATION: I don’t KNOW what the answer

32.

Solve (x^2 – 3x)² – 16 (x² – 3x) – 36 = 0.

Answer»

ANSWER:

Step-by-step EXPLANATION:

I don’t KNOW what the answer

Discussion

33.	Jake can dig a well in 16 days. Paul can dig the same well in 24days. Jake, Paul and Hari together dig the well in 8 days. In how many days Hari alone can dig the well?
Answer» ANSWER: HARI alone can dig the well in 32 DAYS

33.

Jake can dig a well in 16 days. Paul can dig the same well in 24days. Jake, Paul and Hari together dig the well in 8 days. In how many days Hari alone can dig the well?

Answer»

ANSWER:

HARI alone can dig the well in 32 DAYS

Discussion

34.	What is the smallest no. must be added to3701 so that the sum become a perfect square
Answer» Answer: 20 should be ADDED to MAKE it PERFECT SQUARE.

34.

What is the smallest no. must be added to3701 so that the sum become a perfect square

Answer»

Answer:

20 should be ADDED to MAKE it PERFECT SQUARE.

Discussion

35.	Find the zeroes of 2x⁴-3x²+6x²-2 if -√2 and √2 and zeroes of p(x)
Answer» Hey plsss check UR QUE once i THINK it's wrong... CAUSE the power of -3x nd +6x both is 2... so the ANS is not coming... u check it once...!!!

35.

Find the zeroes of 2x⁴-3x²+6x²-2 if -√2 and √2 and zeroes of p(x)

Answer»

Hey plsss check UR QUE once i THINK it's wrong... CAUSE the power of -3x nd +6x both is 2... so the ANS is not coming... u check it once...!!!

Discussion

36.	Simplify 2^2.2^3.8/4^5
Answer» HEYA.. MATE.. HOPE it HELPS you ☺☺☺

36.

Simplify 2^2.2^3.8/4^5

Answer»

HEYA.. MATE..

HOPE it HELPS you ☺☺☺

Discussion

37.	Simplify 10^0 - 10^5
Answer» ANSWER: -9999 Step-by-step explanation: 10^0-10^5 1-10000 =-9999 pls MARK BRAINLIEST and FOLLOW me

37.

Simplify 10^0 - 10^5

Answer»

ANSWER:

-9999

Step-by-step explanation:

10^0-10^5

1-10000

=-9999

pls MARK BRAINLIEST and FOLLOW me

Discussion

38.	Mode is the middle term
Answer» ANSWER: YA BRO but what's your QUESTION ?

38.

Mode is the middle term

Answer»

ANSWER:

YA BRO but what's your QUESTION ?

Discussion

39.	A cuboid has length 7 breadth 5 and height 9. Then find the volume of cuboid?
Answer» Answer: VOLUME of cuboid = l×b×h = 7× 5× 9 = 315 CUBE unit.

39.

A cuboid has length 7 breadth 5 and height 9. Then find the volume of cuboid?

Answer»

Answer:

VOLUME of cuboid = l×b×h

= 7× 5× 9 = 315 CUBE unit.

Discussion

40.	14.A number is decreased by 10%, and the resulting numberis again decreased by 20%. What is the final percentageof decrease?
Answer» Step-by-step EXPLANATION: first u use calculator for this question and find the percent of 20 and DECREASE it by 10 your ANSWER is ready hope it help

40.

14.A number is decreased by 10%, and the resulting numberis again decreased by 20%. What is the final percentageof decrease?

Answer»

Step-by-step EXPLANATION:

first u use calculator for this question and find the percent of 20 and DECREASE it by 10 your ANSWER is ready hope it help

Discussion

41.	Find a zero of the polynomial 2x + 1
Answer» Answer: -1/2 is the zero of the polynomial Step-by-step EXPLANATION: pls MARK brainliest and follow me

41.

Find a zero of the polynomial 2x + 1

Answer»

Answer:

-1/2 is the zero of the polynomial

Step-by-step EXPLANATION:

pls MARK brainliest and follow me

Discussion

42.	17. In a school, students thought of planting trees in and around the school to reduce airpollution. It was decided that the number of trees, that each section of each class willplant, will be the same as the class, in which they are studying, e.g., a section of Class Iwill plant 1 tree, a section of Class II will plant 2 trees and so on till Class XII. There arethree sections of each class. How many trees will be planted by the students ?
Answer» Answer: your answer is 234 Step-by-step EXPLANATION: look the pic and ADD all

42.

17. In a school, students thought of planting trees in and around the school to reduce airpollution. It was decided that the number of trees, that each section of each class willplant, will be the same as the class, in which they are studying, e.g., a section of Class Iwill plant 1 tree, a section of Class II will plant 2 trees and so on till Class XII. There arethree sections of each class. How many trees will be planted by the students ?

Answer»

Answer:

your answer is 234

Step-by-step EXPLANATION:

look the pic and ADD all

Discussion

43.	Find a rational number which is 29/75more than-11/25
Answer» Answer:ape labh LO rab NE dimag NI ditta Step-by-step EXPLANATION:

43.

Find a rational number which is 29/75more than-11/25

Answer»

Answer:ape labh LO rab NE dimag NI ditta

Step-by-step EXPLANATION:

Discussion

44.	12. (m- 9)² + (9- m)factorise it
Answer» (m-9)² + (9-m) m²-2(m)(9) + (9)² + (9-m) m²-18m+81+9-m m²-18m-m+90 m²-19m+90 m²-10m-9m+90 m(m-10)-9(m-10) (m-9)(m-10) HOPE it helps Plz leave a like And MAKE it the Brainliest.

44.

12. (m- 9)² + (9- m)factorise it

Answer»

(m-9)² + (9-m)

m²-2(m)(9) + (9)² + (9-m)

m²-18m+81+9-m

m²-18m-m+90

m²-19m+90

m²-10m-9m+90

m(m-10)-9(m-10)

(m-9)(m-10)

HOPE it helps

Plz leave a like

And MAKE it the Brainliest.

Discussion

45.	13. Find the sum of the first 15 multiples of 8.14. Find the sum of the odd numbers between 0 and 50.
Answer» ANSWER: ANSWER:Step-by-step explanation: 13.The first 15 multiples of 8 are 8,16,24,32,.... 15 times First term = a = 8 Common difference = d = 16 - 8 = 8 N = 15 Applying formula, Sn=n2(2a+(n−1)d) to find sum of n terms of AP , we get S15=152(16+(15−1)8)=152(16+112)=152(128)=15×64=*960. 14.The odd numbers between 0 and 50 are 1,3,5,7,...49 It is an arithmetic progression because the difference between consecutive terms is constant. First term = a = 1 Common difference = 3 - 1 = 2 Last term = l=49 We do not know how many odd numbers are present between 0 and 50. Therefore, we need to find n first. Using formula an=a+(n−1)d, to find nth term of arithmetic progression, we can SAY that 49=1+(n−1)2 ⇒49=1+2n−2 ⇒50=2n ⇒n=502=25 Applying formula, Sn=n2(a+l) to find sum of n terms of AP , we get S25=252(1+49)=252(50)=25×25=625*. also, https://www.google.com/url?sa=t&source=web&rct=j&url=%23&ved=2ahUKEwjr-aOXoNziAhVLPI8KHRtMD68QwqsBMAl6BAgLEAU&usg=AOvVaw0VTJzWxrN8ZFOD4xbU2nov&cshid=1560078468091 https://www.google.com/url?sa=t&source=web&rct=j&url=%23&ved=2ahUKEwjr-aOXoNziAhVLPI8KHRtMD68QwqsBMAp6BAgLEAg&usg=AOvVaw0VTJzWxrN8ZFOD4xbU2nov&cshid=1560078468091 search these URL's for perfect explanation of 13 14 th questions respectively. hope it helps!

45.

13. Find the sum of the first 15 multiples of 8.14. Find the sum of the odd numbers between 0 and 50.

Answer»

ANSWER:

ANSWER:Step-by-step explanation:

13.The first 15 multiples of 8 are 8,16,24,32,.... 15 times

First term = a = 8

Common difference = d = 16 - 8 = 8

N = 15

Applying formula, Sn=n2(2a+(n−1)d) to find sum of n terms of AP , we get

S15=152(16+(15−1)8)=152(16+112)=152(128)=15×64=960.

14.The odd numbers between 0 and 50 are 1,3,5,7,...49

It is an arithmetic progression because the difference between consecutive terms is constant.

First term = a = 1

Common difference = 3 - 1 = 2

Last term = l=49

We do not know how many odd numbers are present between 0 and 50. Therefore, we need to find n first.

Using formula an=a+(n−1)d, to find nth term of arithmetic progression, we can SAY that

49=1+(n−1)2

⇒49=1+2n−2

⇒50=2n

⇒n=502=25

Applying formula, Sn=n2(a+l) to find sum of n terms of AP , we get

S25=252(1+49)=252(50)=25×25=625.

also,

https://www.google.com/url?sa=t&source=web&rct=j&url=%23&ved=2ahUKEwjr-aOXoNziAhVLPI8KHRtMD68QwqsBMAl6BAgLEAU&usg=AOvVaw0VTJzWxrN8ZFOD4xbU2nov&cshid=1560078468091

https://www.google.com/url?sa=t&source=web&rct=j&url=%23&ved=2ahUKEwjr-aOXoNziAhVLPI8KHRtMD68QwqsBMAp6BAgLEAg&usg=AOvVaw0VTJzWxrN8ZFOD4xbU2nov&cshid=1560078468091

search these URL's for perfect explanation of 13 14 th questions respectively.

hope it helps!

Discussion

46.	X^2 + y^2 + z^2/4 + 2xy - yz - zx factorise
Answer» Step-by-step EXPLANATION: x^2+y^2+z^2/4+2xy-yz-zx (x-y)^2+z^2/4-z(y+x)

46.

X^2 + y^2 + z^2/4 + 2xy - yz - zx factorise

Answer»

Step-by-step EXPLANATION:

x^2+y^2+z^2/4+2xy-yz-zx

(x-y)^2+z^2/4-z(y+x)

Discussion

47.	Anyone who knows the answer to the question, please help.I want both answer and solution:)
Answer» AD D- 4, A-1 4^2 +1 = 16+1 = 17 BP B-2. P-16 16^2 +2 = 256 +2 = 258 SO GN G-7. N-14 14^2 +7 = 196 +7 = 203 Similarly CF = 6^2+3 = 39 SO MP = 16^2 + 13 = 269 SO ITS 203 AND. 269

47.

Anyone who knows the answer to the question, please help.I want both answer and solution:)

Answer»

AD

D- 4, A-1

4^2 +1 = 16+1 = 17

BP B-2. P-16

16^2 +2 = 256 +2 = 258

SO GN

G-7. N-14

14^2 +7 = 196 +7 = 203

Similarly CF = 6^2+3 = 39

SO MP = 16^2 + 13 = 269

SO ITS 203

AND. 269

Discussion

48.	Solve and check your solution 3x-2upon2x+1=10upon9
Answer» *QUESTION* $\large{ \frac{ \large{3x - 2}}{ \large{2x + 1}} } = \large{ \frac{ \large{10}}{ \large{9}} }$ Answer: $\large \bf \boxed{x = 4}$ Step-by-step EXPLANATION: $\large{10(2x + 1) = 9(3x - 2)}$ $\large{20x + 10 = 27x - 18 }$ $\large{27x - 20x = 10 + 18}$ $\large{7x = 28}$ $\large{ x = \frac{ \large{28}}{ \large{7}} }$ $\large \bf \boxed{x = 4}$ *VERIFICATION* $\large{ \frac{ \large{3x - 2}}{ \large{2x + 1}} } = \large{ \frac{ \large{10}}{ \large{9}} }$ $\large{ \frac{ \large{3(4) - 2}}{ \large{2(4) + 1}} } = \large{ \frac{ \large{10}}{ \large{9}} }$ $\large{ \frac{ \large{12 - 2}}{ \large{8 + 1}} } = \large{ \frac{ \large{10}}{ \large{9}} }$ $\boxed{ \bf\large{ \frac{ \large{10}}{ \large{9}} } = \large{ \frac{ \large{10}}{ \large{9}} }}$ hope it HELPS**

48.

Solve and check your solution 3x-2upon2x+1=10upon9

Answer»

QUESTION

$\large{ \frac{ \large{3x - 2}}{ \large{2x + 1}} } = \large{ \frac{ \large{10}}{ \large{9}} }$

Answer:

$\large \bf \boxed{x = 4}$

Step-by-step EXPLANATION:

$\large{10(2x + 1) = 9(3x - 2)}$

$\large{20x + 10 = 27x - 18 }$

$\large{27x - 20x = 10 + 18}$

$\large{7x = 28}$

$\large{ x = \frac{ \large{28}}{ \large{7}} }$

$\large \bf \boxed{x = 4}$

*VERIFICATION***

$\large{ \frac{ \large{3x - 2}}{ \large{2x + 1}} } = \large{ \frac{ \large{10}}{ \large{9}} }$

$\large{ \frac{ \large{3(4) - 2}}{ \large{2(4) + 1}} } = \large{ \frac{ \large{10}}{ \large{9}} }$

$\large{ \frac{ \large{12 - 2}}{ \large{8 + 1}} } = \large{ \frac{ \large{10}}{ \large{9}} }$

$\boxed{ \bf\large{ \frac{ \large{10}}{ \large{9}} } = \large{ \frac{ \large{10}}{ \large{9}} }}$

hope it HELPS

Discussion

49.	How much akash institute cost for iit jee preparation
Answer» Answer: Step-by-step explanation: it COSTS about 5 to 6 LAKHS

49.

How much akash institute cost for iit jee preparation

Answer»

Answer:

Step-by-step explanation:

it COSTS about 5 to 6 LAKHS

Discussion

50.	Determine whether the given quadratic equations have real roots ,if so find the roots 6x^2+x-2= 0
Answer» ANSWER: HELLO Dear User__________ Here is Your Answer...!! ____________________ Step by step SOLUTION: $Given \ p(x)=6x^{2}+x-2\\\\we \ have \ to \ check \ whether \ p(x) \ have \ real \ roots \ or \ not.\\\\For \ real \ roots =b^{2}-4ac\geq0\\\\putting \ value \ here\\\\b^{2}-4ac\geq0\\\\ 1^{2}-(4 \times6 \times-2)=1+24=25\\\\ b^{2}-4ac\geq0 \ so \ p(x) \ has \ real \ roots\\\\p(x)=6x^{2}+x-2\\\\p(x)=6x^{2}+4x-3x-2\\\\p(x)=2x(3x+2)-(3x+2)\\\\p(x)=(3x+2)(2x-1)\\\\\alpha =3x+2=0 \ or \ \beta =2x-1\\\\x=\frac{-2}{3} \ or \ x=\frac{1}{2}$ HOPE it is clear to you.

50.

Determine whether the given quadratic equations have real roots ,if so find the roots 6x^2+x-2= 0

Answer»

ANSWER:

HELLO Dear User__________

Here is Your Answer...!!

____________________

Step by step SOLUTION:

$Given \ p(x)=6x^{2}+x-2\\\\we \ have \ to \ check \ whether \ p(x) \ have \ real \ roots \ or \ not.\\\\For \ real \ roots =b^{2}-4ac\geq0\\\\putting \ value \ here\\\\b^{2}-4ac\geq0\\\\ 1^{2}-(4 \times6 \times-2)=1+24=25\\\\ b^{2}-4ac\geq0 \ so \ p(x) \ has \ real \ roots\\\\p(x)=6x^{2}+x-2\\\\p(x)=6x^{2}+4x-3x-2\\\\p(x)=2x(3x+2)-(3x+2)\\\\p(x)=(3x+2)(2x-1)\\\\\alpha =3x+2=0 \ or \ \beta =2x-1\\\\x=\frac{-2}{3} \ or \ x=\frac{1}{2}$

HOPE it is clear to you.

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