332354 + Interview Questions in Secondary School in Math

1.	*6. If a and B are the roots of the quadraticequationx²-4x+1 = 0, find the values ofα²+β² and α³+β³
Answer» Answer: SEE in the image Step-by-step EXPLANATION: HOPE it HELPS you

1.

*6. If a and B are the roots of the quadraticequationx²-4x+1 = 0, find the values ofα²+β² and α³+β³

Answer»

Answer:

SEE in the image

Step-by-step EXPLANATION:

HOPE it HELPS you

Discussion

2.	Calculate the H.M. from the following data 6, 10, 15 and 20 . 6, 10, 15 और 20 का हरात्मक माध्य ज्ञात करें
Answer» Step-by-step explanation: उनकी माध्यिका के सापेक्ष माध्य विचलन ज्ञात करने के लिए ... 3x6+6x10+ 4x14+7x18. __ = 13. 20. ___f (X; - x) _3(-7) + 6(-3) + 4(1) + 7 ...

2.

Calculate the H.M. from the following data 6, 10, 15 and 20 . 6, 10, 15 और 20 का हरात्मक माध्य ज्ञात करें

Answer»

Step-by-step explanation:

उनकी माध्यिका के सापेक्ष माध्य विचलन ज्ञात करने के लिए ... 3x6+6x10+ 4x14+7x18. = 13. 20. _f (X; - x) _3(-7) + 6(-3) + 4(1) + 7 ...

Discussion

3.	(x-1/x) (x+1/x) (x^2+1/x^2)
Answer» (a+b) (a-b ) = a^2 -b^2 So (x^2 -1/x^2) (x^2+ 1/x^2) Again x^4 - 1/x^4 ANS

Discussion

4.	Number of subsets of a set of order three isA. 2B. 6C. 4D. 8
Answer» ANSWER: C. 4 Step-by-step explanation: HOPE it will HELP u....

4.

Number of subsets of a set of order three isA. 2B. 6C. 4D. 8

Answer»

ANSWER:

C. 4

Step-by-step explanation:

HOPE it will HELP u....

Discussion

5.	If a, ß are roots of x2-2x-3=0 then value ofa*+B4 is8280o108
Answer» Answer: 0 Step-by-step EXPLANATION:

5.

If a, ß are roots of x2-2x-3=0 then value ofa*+B4 is8280o108

Answer»

Answer:

0

Step-by-step EXPLANATION:

Discussion

6.	10) Find the HCF of 135 and 75 by prime factorisation method and then find LCM of HCF(135,75) and 20.nomial arquotient and
Answer» Answer: 5 Step-by-step EXPLANATION:

6.

10) Find the HCF of 135 and 75 by prime factorisation method and then find LCM of HCF(135,75) and 20.nomial arquotient and

Answer»

Answer:

5

Step-by-step EXPLANATION:

Discussion

7.	You entered a room, of 34 people. A shooter then enters killing 30. How many people are left in the room? I WON against Thanduxolo Tshabalala...
Answer» Answer: 35 TAKIN the shooter please FOLLOW me

7.

You entered a room, of 34 people. A shooter then enters killing 30. How many people are left in the room? I WON against Thanduxolo Tshabalala...

Answer»

Answer:

35 TAKIN the shooter

please FOLLOW me

Discussion

8.	How can i increase my piints
Answer» Step-by-step EXPLANATION: By ANSWERING more QUESTIONS

8.

How can i increase my piints

Answer»

Step-by-step EXPLANATION:

By ANSWERING more QUESTIONS

Discussion

9.	Options are:a) 3b) 5c) 3 or 5d) None of thesePlease give the solution also
Answer» HEY here is your ANSWER a. 3 HOPE it HELPS you

9.

Options are:a) 3b) 5c) 3 or 5d) None of thesePlease give the solution also

Answer»

HEY here is your ANSWER

a. 3

HOPE it HELPS you

Discussion

10.	Who invented me please tell me
Answer» ANSWER: INVENTORY..... Step-by-step EXPLANATION: PLEASE MARK ME AS BRAINLIES T

10.

Who invented me please tell me

Answer»

ANSWER:

INVENTORY.....

Step-by-step EXPLANATION:

PLEASE MARK ME AS BRAINLIES T

Discussion

11.	Calculate the H.M. from the following data 6, 10, 15 and 20 . 6, 10, 15 और 20 का हरात्मक माध्य ज्ञात करें * 2
Answer» ANSWER: feveysuiwhwvsvdtysuwuwnbdbd Step-by-step EXPLANATION: eyeyeyhrhrgryeuisueyhsbstsu7euw

11.

Calculate the H.M. from the following data 6, 10, 15 and 20 . 6, 10, 15 और 20 का हरात्मक माध्य ज्ञात करें * 2

Answer»

ANSWER:

feveysuiwhwvsvdtysuwuwnbdbd

Step-by-step EXPLANATION:

eyeyeyhrhrgryeuisueyhsbstsu7euw

Discussion

12.	A sum of Rs 13500 is invested at 16%p.a. compound interest for 5 years .calculate interest for second year , without using formula
Answer» ANSWER: MARK as BRANLIEST and FOLLOW me

12.

A sum of Rs 13500 is invested at 16%p.a. compound interest for 5 years .calculate interest for second year , without using formula

Answer»

ANSWER:

MARK as BRANLIEST and FOLLOW me

Discussion

13.	Express \frac{1}{1+\sqrt{2}-\sqrt{3}} as an equivalent fraction with a rational denominator
Answer» ANSWER: please WRITE the question CORRECTLY. ALTHOUGH I think it's a nice question.

13.

Express \frac{1}{1+\sqrt{2}-\sqrt{3}} as an equivalent fraction with a rational denominator

Answer»

ANSWER:

please WRITE the question CORRECTLY. ALTHOUGH I think it's a nice question.

Discussion

14.	2. If R = {(1,1),(2,3),(4,5)}, then domain of the function is ?A. Dom R{1,3,5)B. Dom R = {1,2,4} C. Dom R{1,1,4,5)D. Dom R = {2,3,4,5)
Answer» CORRECT option is : ( B ) DOMAIN is the SET of all the X values in any ORDERED pair.

14.

2. If R = {(1,1),(2,3),(4,5)}, then domain of the function is ?A. Dom R{1,3,5)B. Dom R = {1,2,4} C. Dom R{1,1,4,5)D. Dom R = {2,3,4,5)

Answer»

CORRECT option is : ( B )

DOMAIN is the SET of all the X values in any ORDERED pair.

Discussion

15.	Find the zeroes of x²-x-12 graphically
Answer» ANSWER: x^2-3x+4x-12 X(x-3)+4(x-3) (x-3)(X+4) Step-by-step EXPLANATION: x-3=0 X=3. x-4=0 X=4

15.

Find the zeroes of x²-x-12 graphically

Answer»

ANSWER:

x^2-3x+4x-12

X(x-3)+4(x-3)

(x-3)(X+4)

Step-by-step EXPLANATION:

x-3=0

X=3.

x-4=0

X=4

Discussion

16.	The sum of three successive numbers in an ap is 192 then the numbers are
Answer» Answer: Step-by-step EXPLANATION: let THREE consecutive NUMBERS be a,a-d,a+d According to given condition.a+a-d+a+d = 18 3a= 18 a= 6 According to next given condition. a(a+d)(a-d) = 192 a(a-d)^2 = 192 (a-d)^2 = 32 a^2 +d^2 -2ad = 32 36 + d^2 - 12d = 32 d^2 -12d = -4 d^2 +d = 1/3.......(1) hope it HELPS you

16.

The sum of three successive numbers in an ap is 192 then the numbers are

Answer»

Answer:

Step-by-step EXPLANATION:

let THREE consecutive NUMBERS be

a,a-d,a+d

According to given condition.a+a-d+a+d = 18

3a= 18

a= 6

According to next given condition.

a(a+d)(a-d) = 192

a(a-d)^2 = 192

(a-d)^2 = 32

a^2 +d^2 -2ad = 32

36 + d^2 - 12d = 32

d^2 -12d = -4

d^2 +d = 1/3.......(1)

hope it HELPS you

Discussion

17.	RS. 1 2000 was divided among A,B,C suchthat sharks R 2000 more than s but2000 16 than what is gs share?Rs 1000O AS 4000None of theseRS 2000
Answer» Step-by-step EXPLANATION: i don't KNOW sorry NEXT TIME will answer

17.

RS. 1 2000 was divided among A,B,C suchthat sharks R 2000 more than s but2000 16 than what is gs share?Rs 1000O AS 4000None of theseRS 2000

Answer»

Step-by-step EXPLANATION:

i don't KNOW sorry

NEXT TIME will answer

Discussion

18.	If sum to the first n terms of an A.P. is 4n^2 - n then find the first term of the A.P. and also find the sum of n terms
Answer» ANSWER: see in the image Step-by-step explanation: HOPE it helps you doing......

18.

If sum to the first n terms of an A.P. is 4n^2 - n then find the first term of the A.P. and also find the sum of n terms

Answer»

ANSWER:

see in the image

Step-by-step explanation:

HOPE it helps you doing......

Discussion

19.	Fill in the blanks in throwing a die the number of possible outcome are.......
Answer» the TOTAL POSSIBLE OUTCOMES are 1/6

Discussion

20.	A=2i-2sj+k & B=3i+j-2k *. Find s
Answer» Step-by-step explanation: first of all try yourself by HELP of examples dont be dependent on ANYONE in your EXAM no one will help you if then ALSO you are anable to solve then ask me again and again till you do not understand how to solve

20.

A=2i-2sj+k & B=3i+j-2k *. Find s

Answer»

Step-by-step explanation:

first of all try yourself by HELP of examples dont be dependent on ANYONE in your EXAM no one will help you if then ALSO you are anable to solve then ask me again and again till you do not understand how to solve

Discussion

21.	Sole this plzzzzzzzzz
Answer» Hey buddy HOPE this finds u well and also mark me brainliest \|A \| \| \| 60 \|__________\|___________45_ B. C. D Join A to C and D Let Height of the aeroplane from the ground = AB = 200m Width of the river = CD i) In right TRIANGLE ABD, tan 45° = AB / BD 1 = 200 / BD BD = 200m ---( 1 ) ii ) In triangle ABC , Tan 60° = AB / BC √3 = 200 / BC BC = 200 /√3 BC =( 200 √3)/( √3 × √3 ) BC = 200√3 / 3----( 2 ) iii ) width of the river = CD = BD - BC = 200 - 200√3/3 = 200( 1 - √3 /3) = 200( 3 - √3 )/3 =( 200/3) ( 3 - √3 ) m I hope this helps you. :)

Discussion

22.	Please answer meplease do all i'll follow you who gave answer
Answer» ANSWER: WORK it out yourself Step-by-step EXPLANATION: go to YOUTUBE and start SEARCHING

22.

Please answer meplease do all i'll follow you who gave answer

Answer»

ANSWER:

WORK it out yourself

Step-by-step EXPLANATION:

go to YOUTUBE and start SEARCHING

Discussion

23.	A shuttlecock used for playing badminton has the shape of the combination ofa.cylinder and a hemisphereB.sphere and a coneC.a cylinder and a hemisphereD.frustum of a cone and a hemisphere
Answer» Step-by-step EXPLANATION: D is the CORRECT [email PROTECTED]

23.

A shuttlecock used for playing badminton has the shape of the combination ofa.cylinder and a hemisphereB.sphere and a coneC.a cylinder and a hemisphereD.frustum of a cone and a hemisphere

Answer»

Step-by-step EXPLANATION:

D is the CORRECT [email PROTECTED]

Discussion

24.	How many diagonals does each of the following have? a) A convex Quadrilateral b) A regular heptagon
Answer» Answer: *hey* *dude* Step-by-step EXPLANATION: *here* is *your* *answer* *DIAGONALS* *are* a. *CONVEX* *quadrilateral* *has* 2 *diagonals* b. A *regular* *heptagon* *has* 14 *diagonals.. HOPE* IT *HELPS* TO *YOU* *PLZZZ* *MARK* ME AS A *BRAINLIEST*

24.

How many diagonals does each of the following have? a) A convex Quadrilateral b) A regular heptagon

Answer»

Answer:

hey dude

Step-by-step EXPLANATION:

here is your answer

DIAGONALS are

a. CONVEX quadrilateral has 2 diagonals

b. A regular heptagon has 14 diagonals..

HOPE IT HELPS TO YOU

PLZZZ MARK ME AS A BRAINLIEST

Discussion

25.	Estimate each sum to the nearest hundred.a. 81,464 + 77,479
Answer» Step-by-step EXPLANATION: a) 81500+77500 = 159000

25.

Estimate each sum to the nearest hundred.a. 81,464 + 77,479

Answer»

Step-by-step EXPLANATION:

a) 81500+77500

= 159000

Discussion

26.	In what ratio must a grocer mix twovarieties of tea worth Rs.50 per kg andRs.55 per kg so that by selling themixture at Rs. 57.20 a kg, the gain is 10%?4:12:1OOO03:21:2
Answer» Answer: 562839573 to LINK EMAIL ADDRESS

26.

In what ratio must a grocer mix twovarieties of tea worth Rs.50 per kg andRs.55 per kg so that by selling themixture at Rs. 57.20 a kg, the gain is 10%?4:12:1OOO03:21:2

Answer»

Answer:

562839573 to LINK EMAIL ADDRESS

Discussion

27.	If the zeroes of the polynomial, x³ -3x square +x +1 are a-b,a,a+b,find a and b.
Answer» ANSWER: HEY SEE the ATTACHMENT DEAR

27.

If the zeroes of the polynomial, x³ -3x square +x +1 are a-b,a,a+b,find a and b.

Answer»

ANSWER:

HEY SEE the ATTACHMENT DEAR

Discussion

28.	Why is the vector perpendicular to column space called left nullspace? I mean why 'left' not others?
Answer» ANSWER: Nullspace is perpendicular to row space The row space of a matrix is orthogonal to the nullspace, because AX = 0 MEANS the dot PRODUCT of x with each row of A is 0. But then the product of x with any combination of rows of A must be 0.

28.

Why is the vector perpendicular to column space called left nullspace? I mean why 'left' not others?

Answer»

ANSWER:

Nullspace is perpendicular to row space

The row space of a matrix is orthogonal to the nullspace, because AX = 0 MEANS the dot PRODUCT of x with each row of A is 0. But then the product of x with any combination of rows of A must be 0.

Discussion

29.	1 percent of rs 500
Answer» ANSWER: What is 1 PERCENT (calculated PERCENTAGE %) of NUMBER 500? Answer: 5.

29.

1 percent of rs 500

Answer»

ANSWER:

What is 1 PERCENT (calculated PERCENTAGE %) of NUMBER 500? Answer: 5.

Discussion

30.	Q1) Arrange the given fractions in descending order: a) 2/3, 4/9, 5/6 b) 7/12, 11/36, 37/72Q2) Devansh painted two-third of the wall and his sister painted one-fourth of the remaining wall space. How much did they paint together? Q3) Convert into fractions (in lowest terms): a) 0.8 = (b) 2.25 = (c) 3.025 =
Answer» Step-by-step explanation: Q1. (a) 2/3, 4/9, 5/6 Taking LCM of denominator, we have, = 12/18, 8/18, 15/18 Clealry, 15/18 > 12/18 > 8/18 Therefore, we GET, => Descending order : 5/6 > 2/3 > 4/9 (B) 7/12, 11/36, 37/72 Taking LCM of denominator. = 42/72, 22/72, 37/72 Clearly, 42/72 > 37/72 > 22/72 Therefore, we get, Descending order: 7/12 > 37/72 > 11/36 Q2. Wall PAINTED by Devansh = 2/3 Remaining wall to be painted = 1/3 Wall painted by sister = 1/4(1/3) = 1/12 TOTAL wall painted = 2/3 + 1/12 = (8+1)/12 = 9/12 = 3/4 Hence, 3/4 of the wall is total painted. Q3. (a) 0.8 = 8/10 = 4/5 (b) 2.25 = 225/100 = 9/4 (c) 3.025 = 3025/1000 = 25/8

30.

Q1) Arrange the given fractions in descending order: a) 2/3, 4/9, 5/6 b) 7/12, 11/36, 37/72Q2) Devansh painted two-third of the wall and his sister painted one-fourth of the remaining wall space. How much did they paint together? Q3) Convert into fractions (in lowest terms): a) 0.8 = (b) 2.25 = (c) 3.025 =

Answer»

Step-by-step explanation:

Q1.

(a) 2/3, 4/9, 5/6

Taking LCM of denominator, we have,

= 12/18, 8/18, 15/18

Clealry, 15/18 > 12/18 > 8/18

Therefore, we GET,

=> Descending order : 5/6 > 2/3 > 4/9

(B) 7/12, 11/36, 37/72

Taking LCM of denominator.

= 42/72, 22/72, 37/72

Clearly, 42/72 > 37/72 > 22/72

Therefore, we get,

Descending order: 7/12 > 37/72 > 11/36

Q2.

Wall PAINTED by Devansh = 2/3

Remaining wall to be painted = 1/3

Wall painted by sister = 1/4(1/3) = 1/12

TOTAL wall painted = 2/3 + 1/12

= (8+1)/12

= 9/12

= 3/4

Hence, 3/4 of the wall is total painted.

Q3.

(a) 0.8 = 8/10 = 4/5

(b) 2.25 = 225/100 = 9/4

(c) 3.025 = 3025/1000 = 25/8

Discussion

31.	Find the value of k when the root of the quadratic equationx² + k(4x+k-1)+ 2= 0 are real and equal.
Answer» ANSWER: Answer: K=-1 or 2/3 Step-by-step explanation: x^2 + k(4x+k-1)+2 = x^2 + 4KX + (k^2-k+2) When the ROOTS are EQUAL b^2=4ac So (4k)^2=41(k^2-k+2) 16k^2=4k^2-4k+8 12k^2+4k-8=0 3k^2+k-2=0 (3k-2)(k+1)=0 So k=2/3 or -1 So the polynomial is x^2-4x+4=(x-2)^2 Or x^2+8x/3+16/9=(x+4/3)^2 Step-by-step explanation:

31.

Find the value of k when the root of the quadratic equationx² + k(4x+k-1)+ 2= 0 are real and equal.

Answer»

ANSWER:

Answer: K=-1 or 2/3

Step-by-step explanation:

x^2 + k(4x+k-1)+2

= x^2 + 4KX + (k^2-k+2)

When the ROOTS are EQUAL b^2=4ac

So (4k)^2=4*1*(k^2-k+2)

16k^2=4k^2-4k+8

12k^2+4k-8=0

3k^2+k-2=0

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

So k=2/3 or -1

So the polynomial is x^2-4x+4=(x-2)^2

Or

x^2+8x/3+16/9=(x+4/3)^2

Step-by-step explanation:

Discussion

32.	The ratio of two numbers is 2:3. If 6 is subtracted from the second number then the number which issubtracted from the first number so that the new ratio becomes the same as that of the previous is
Answer» ANSWER: it will HELP you to WRITE the answer

32.

The ratio of two numbers is 2:3. If 6 is subtracted from the second number then the number which issubtracted from the first number so that the new ratio becomes the same as that of the previous is

Answer»

ANSWER:

it will HELP you to WRITE the answer

Discussion

33.	Find a if a (a + 10)
Answer» Step-by-step explanation: A firm's ________ is its plan or DIAGRAM for how it competes, uses its resources structures its relationship INTERFACES with customers and CREATES value to sustain itself on the BASIS of the profits it generates.

33.

Find a if a (a + 10)

Answer»

Step-by-step explanation:

A firm's ________ is its plan or DIAGRAM for how it competes, uses its resources structures its relationship INTERFACES with

customers and CREATES value to sustain itself on the BASIS of the profits it generates.

Discussion

34.	What is the decimal expansion for root 3
Answer» Step-by-step EXPLANATION: Hii your ANSWER is here it's 1.732 HOPE it will HELP you follow me PLZ

34.

What is the decimal expansion for root 3

Answer»

Step-by-step EXPLANATION:

Hii

your ANSWER is here

it's 1.732

HOPE it will HELP you

follow me PLZ

Discussion

35.	Four employees at a certain companyworked on a project. The amounts oftime that the four employees worked onthe project were in the ratio 2 to 3 to 5 to6. If one of the four employees workedon the project for 30 hours, which of thefollowing cannot be the total number ofhours that the four employees worked onthe project?80962400178
Answer» Answer: 0178 Step-by-step EXPLANATION:

35.

Four employees at a certain companyworked on a project. The amounts oftime that the four employees worked onthe project were in the ratio 2 to 3 to 5 to6. If one of the four employees workedon the project for 30 hours, which of thefollowing cannot be the total number ofhours that the four employees worked onthe project?80962400178

Answer»

Answer:

0178

Step-by-step EXPLANATION:

Discussion

36.	If A and B are two events p(A) =1/4,p(b)=1/2p(A,B)=1/8. Find (i) p(a or b) (ii) p(not a and not b)
Answer» ANSWER: just a few MINUTES LATER I will TELL you answer...

36.

If A and B are two events p(A) =1/4,p(b)=1/2p(A,B)=1/8. Find (i) p(a or b) (ii) p(not a and not b)

Answer»

ANSWER:

just a few MINUTES LATER I will TELL you answer...

Discussion

37.	10 years paper solved of class 10 only Aditya will answer
Answer» OK ASK only ADITYA......

37.

10 years paper solved of class 10 only Aditya will answer

Answer»

OK ASK only ADITYA......

Discussion

38.	Add (2√3-5√2)and(√3+2√2)
Answer» (2 $\sqrt{<klux>3</klux>}$ -5 $\sqrt{2}$ ) + ( $\sqrt{3}$ +2 $\sqrt{2}$ ) =2 $\sqrt{3}$ - 5 $\sqrt{2}$ + $\sqrt{3}$ +2 $\sqrt{2}$ =3 $\sqrt{3}$ - 3 $\sqrt{2}$

38.

Add (2√3-5√2)and(√3+2√2)

Answer»

(2 $\sqrt{<klux>3</klux>}$ -5 $\sqrt{2}$ ) + ( $\sqrt{3}$ +2 $\sqrt{2}$ )

=2 $\sqrt{3}$ - 5 $\sqrt{2}$ + $\sqrt{3}$ +2 $\sqrt{2}$

=3 $\sqrt{3}$ - 3 $\sqrt{2}$

Discussion

39.	(a^-1 +b^-1) ÷ (a^-2 - b^-2)
Answer» Answer: Step-by-step explanation: yes TOH yeah koi bhi nhi kar payega mushkil h follow KARO mujhe insta per and ash karo kuch nhi RAKHA h padhai me bhai such bol raha hu me. Mark me as brainliest FAST jaldi.......

39.

(a^-1 +b^-1) ÷ (a^-2 - b^-2)

Answer»

Answer:

Step-by-step explanation:

yes TOH yeah koi bhi nhi kar payega mushkil h follow KARO mujhe insta per and ash karo kuch nhi RAKHA h padhai me bhai such bol raha hu me.

Mark me as brainliest FAST jaldi.......

Discussion

40.	The cube root of .000512 is (A) 0.5 (B) 0.08 (C) 0.008 (D)8
Answer» ◆━━━━━━◆❃◆━━━━━━◆ ✏QUESTION The cube ROOT of 0.00512 is (A) 0.5 (B) 0.08 (C) 0.008 (D)8 ◆━━━━━━◆❃◆━━━━━━◆ ✏ ANSWER (B) 0.08 0.1723547752 is the answer but we have to APPROXIMATE it. ◆━━━━━━◆❃◆━━━━━━◆

40.

The cube root of .000512 is (A) 0.5 (B) 0.08 (C) 0.008 (D)8

Answer»

◆━━━━━━◆❃◆━━━━━━◆

✏QUESTION

The cube ROOT of 0.00512 is

(A) 0.5

(B) 0.08

(C) 0.008

(D)8

◆━━━━━━◆❃◆━━━━━━◆

✏ ANSWER

(B) 0.08

0.1723547752 is the answer but we have to APPROXIMATE it.

◆━━━━━━◆❃◆━━━━━━◆

Discussion

41.	Please answer it pleaseI need it by todayquestion no. 8 please please please
Answer» ANSWER: so the SQUARE ROOT of 48=6.928, 75=8.66, 90=9.487 and 40=6.325 so 6.928-8.66+9.487-6325 = 1.43

41.

Please answer it pleaseI need it by todayquestion no. 8 please please please

Answer»

ANSWER:

so the SQUARE ROOT of 48=6.928, 75=8.66, 90=9.487 and 40=6.325

so 6.928-8.66+9.487-6325 = 1.43

Discussion

42.	A train leaves Meerut at 6 A.M. and reaches Delhi at 10 A.M. Another trainleaves Delhi at 8 A.M. and reaches Meerut at 11:30 A.M. At what time do thetwo trains cross each other ?(d) 8:56 A.M.A(c) 8:36 AM
Answer» HEY USER! THIS IS YOUR ANSWER:- Let the distance between Meerut and Delhi be y km. Average speed of the train leaving Meerut = y/4 km/hr. Average speed of the train leaving Delhi = 2Y/7 km/hr. suppose they meet x hrs. after 6 a.m then, xy/4 + 2y (x-2)/7 = y ⇒ x/4 + 2x-4/7 = 1 ⇒ 15X = 44 ∴ x = 44/15 = 2 hrs. 56 min So, the train meet at 8:56 a.m HOPE IT HELPS! HAVE A GOOD DAY :D

42.

A train leaves Meerut at 6 A.M. and reaches Delhi at 10 A.M. Another trainleaves Delhi at 8 A.M. and reaches Meerut at 11:30 A.M. At what time do thetwo trains cross each other ?(d) 8:56 A.M.A(c) 8:36 AM

Answer»

HEY USER!

THIS IS YOUR ANSWER:-

Let the distance between Meerut and Delhi be y km.

Average speed of the train leaving Meerut = y/4 km/hr.

Average speed of the train leaving Delhi = 2Y/7 km/hr.

suppose they meet x hrs. after 6 a.m

then, xy/4 + 2y (x-2)/7 = y

⇒ x/4 + 2x-4/7 = 1

⇒ 15X = 44

∴ x = 44/15 = 2 hrs. 56 min

So, the train meet at 8:56 a.m

HOPE IT HELPS!

HAVE A GOOD DAY :D

Discussion

43.	in a right angle triangle abc at b in which ac 13 and ab 5 find sine a + cos a , sin a/cos a ,tan a_ cos c. class 10 trigonometry chapter plese give answer and follow me
Answer» Answer: COS 88ma Step-by-step explanation: a right angle triangle abc at b in which ac 13 and AB 5 find sine a + cos a , sin a/cos a ,tan a_ cos c. class 10 TRIGONOMETRY chapter plese give answer and FOLLOW

43.

in a right angle triangle abc at b in which ac 13 and ab 5 find sine a + cos a , sin a/cos a ,tan a_ cos c. class 10 trigonometry chapter plese give answer and follow me

Answer»

Answer:

COS 88ma

Step-by-step explanation:

a right angle triangle abc at b in which ac 13 and AB 5 find sine a + cos a , sin a/cos a ,tan a_ cos c. class 10 TRIGONOMETRY chapter plese give answer and FOLLOW

Discussion

44.	A takes 2 days to complete one-third of aJob, B takes 2 days to complete one-sixthof the same work and C takes 4 days tocomplete half the job. If all of them worktogether for 2 days and C quits, how longwill it take for A and B to complete theremaining work done?5 days4 days1 day2 days
Answer» ANSWER: in 2 DAYS is CORRECT answer

44.

A takes 2 days to complete one-third of aJob, B takes 2 days to complete one-sixthof the same work and C takes 4 days tocomplete half the job. If all of them worktogether for 2 days and C quits, how longwill it take for A and B to complete theremaining work done?5 days4 days1 day2 days

Answer»

ANSWER:

in 2 DAYS is CORRECT answer

Discussion

45.	Ek man two cow ko 4200 me bechta h aur ek ko 15%labh pr dure ko 10%hani pr to na labh hoti h na hani to pahli gai ka karyamul kya hogi
Answer» Answer: Q Accumulate the count of crona virus Cases (CONFIRMED cases, RECOVERED .case ete) from the first date (30TH January) until 31. May and calculate its percentage increase per month

45.

Ek man two cow ko 4200 me bechta h aur ek ko 15%labh pr dure ko 10%hani pr to na labh hoti h na hani to pahli gai ka karyamul kya hogi

Answer»

Answer:

Q Accumulate the count of crona virus Cases

(CONFIRMED cases, RECOVERED .case ete) from the first

date (30TH January) until 31. May and calculate

its percentage increase per month

Discussion

46.	Find the cube of 1261 by using prime factorisation method
Answer» ANSWER: KSH sidhvdrttuevrgsj d

46.

Find the cube of 1261 by using prime factorisation method

Answer»

ANSWER:

KSH sidhvdrttuevrgsj d

Discussion

47.	Empty set is a ?1. infinite set 2.invalid set 3.finite set4.none of the above
Answer» Answer: FINITE SET is the anss . please MAKE me as BRAIN list

47.

Empty set is a ?1. infinite set 2.invalid set 3.finite set4.none of the above

Answer»

Answer:

FINITE SET is the anss .

please MAKE me as BRAIN list

Discussion

48.	Find (x+y) /(x-y) if x is 1/4 , y is 3/2
Answer» ANSWER: x+y=1/4 + 3/2 =7/4 x-y =1/4 - 3/2= -5/4 x+y ÷ x-y = -7/5 hope it HELPS you

48.

Find (x+y) /(x-y) if x is 1/4 , y is 3/2

Answer»

ANSWER:

x+y=1/4 + 3/2 =7/4

x-y =1/4 - 3/2= -5/4

x+y ÷ x-y = -7/5

hope it HELPS you

Discussion

49.	Show that 1/1-x a-b + 1/1-x b-a =1
Answer» ANSWER: THANKS for this QUESTION

49.

Show that 1/1-x a-b + 1/1-x b-a =1

Answer»

ANSWER:

THANKS for this QUESTION

Discussion

50.	If 2A=3B and 4B=5c then find A:C
Answer» ANSWER: Step-by-step EXPLANATION: A = 3B/2 C = 4B/5 SO, A : C = (3B/2)/4B/5) A :C = 15 : 8

50.

If 2A=3B and 4B=5c then find A:C

Answer»

ANSWER:

Step-by-step EXPLANATION:

A = 3B/2

C = 4B/5

SO, A : C = (3B/2)/4B/5)

A :C = 15 : 8

Discussion

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