CBSE > Class 10 > Mathematics | CBSE Board | Homework Help

xy/x+y=2/3;xy/y-x=2 xy/x+y=2/3 3xy=2x+2y Dividing both sides by xy we get, 2x+2y/xy=3 2/y+2/x=3 -1 similarly, xy/y-x=2 will be 2/x-2/y=1 -2 Let,1/x=u and 1/y=v Then, eq. 1 and 2 will become 2v+2u=3 -3 2u-2v=1 -4 Adding eq.3 and 4 4u=4 u=1 putting in eq.3 we get, v=1/2 Now, u=1/x 1/x =1/1 x=1 v=1/y 1/y=1/2 y=2

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ANSWER

Kya yahan kisi k pass maths board exam 2018 ka paper jo aaj aaya wo phle se tha?

Posted by Aaty Kumari 7 years, 9 months ago

CBSE > Class 10 > Mathematics

7 answers

Punit Choudhary 7 years, 8 months ago

I have math paper. . . . Now ??????

2Thank You

Aaty Kumari 7 years, 9 months ago

Where was the paper leaked?

1Thank You

Aaty Kumari 7 years, 9 months ago

Nhi

1Thank You

Mahesh Babu 7 years, 9 months ago

Lagta hai tum isi saal class 10 me aayi ho right???!

1Thank You

Aaty Kumari 7 years, 9 months ago

No i just want to know who leaked the paper?

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Sanjeev Saxena Saxena 7 years, 9 months ago

nahi sir..... bhout bura laga hai sun ke hamari mahanat bekar ho gayi?

1Thank You

Rikshesh Dhiman 7 years, 9 months ago

it seem that u also involve in spam??

1Thank You

ANSWER

9AD square=7 Ab square ab nahi ayega yaar ????

Posted by Mahesh Babu 7 years, 9 months ago

CBSE > Class 10 > Mathematics

3 answers

Sania 065 7 years, 8 months ago

0Thank You

Harry Sood 7 years, 9 months ago

So easy from ncert.

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Samaira Sen 7 years, 9 months ago

Hmmm.....?

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ANSWER

Maths paper was leaked board has decided to reconduct the mats exam with in the week.......?????

Posted by Tanu Priya 7 years, 9 months ago

CBSE > Class 10 > Mathematics

9 answers

Sania 065 7 years, 8 months ago

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Rikshesh Dhiman 7 years, 9 months ago

tanu sorry if u feel upset through my ans. sorry

1Thank You

Darshanaa Yadav 7 years, 9 months ago

Instead of discussing it we should concentrate on studying

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Darshanaa Yadav 7 years, 9 months ago

Pls change the topic

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Darshanaa Yadav 7 years, 9 months ago

Abe yarr afternoon se yhi chal rha hai.. Yha per

1Thank You

Tanu Priya 7 years, 9 months ago

I know then i tell u aall

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The Raj 7 years, 9 months ago

I didn’t know that thanks????

1Thank You

Rikshesh Dhiman 7 years, 9 months ago

sis i think everyone knows that

1Thank You

Mahesh Babu 7 years, 9 months ago

?????

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ANSWER

Guys I think v should stop discussing and study.... kuch aur nai kar sakte ab ..... isn't it

Posted by ♥️Bhavika Naik?? 7 years, 9 months ago

CBSE > Class 10 > Mathematics

2 answers

♥️Bhavika Naik?? 7 years, 9 months ago

Yeah ?

1Thank You

The Raj 7 years, 9 months ago

Go study

2Thank You

ANSWER

when we the innocent child start prepairing mayhs

Posted by Rikshesh Dhiman 7 years, 9 months ago

CBSE > Class 10 > Mathematics

2 answers

Rikshesh Dhiman 7 years, 9 months ago

answer

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Rikshesh Dhiman 7 years, 9 months ago

maths plz ans.

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ANSWER

The sum of four consecutive numbers in an AP is 32 and the ratio of the product of the first and last term to the product of two middle terms is 7: 15.Find the number

Posted by Neha Soni 7 years, 9 months ago

CBSE > Class 10 > Mathematics

2 answers

Deepanshu Kunal 7 years, 9 months ago

Let four no.'s are:- a-3d,a-d,a+d,a+3d A.T.Q a-3d+a-d+a+d+a+3d=32 4a=32 a=8 Now, (a-3d)(a+3d)/(a-d)(a+d)=7/15 a^2-9d^2/a^2-d^2=7/15 15a^2-135d^2=7a^2-7d^2 8a^2=128d^2 8 (64)=128d^2 512=128d^2 4=d^2 d=+-2 When d=2 No.'s are 2,6,10,14 When d= -2 No.'s are 14,10,6,2

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Abhishek Mishradelhi Holy Convent School 7 years, 9 months ago

2,6,10,14

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ANSWER

The sum of four consecutive number in an AP is 32 and the ratio of the product of the first and last term to the product of two middle term is 7 : 15. Find the number.

Posted by Sahil Gupta 7 years, 9 months ago

CBSE > Class 10 > Mathematics