help@askiitians.com

+91-87964 74404

Grade 9Algebra

hello,
i am looking for an answer to the question in maths which is related to the chapter pair of staight lines. the question is

the slope of one line of 3x square + 2hxy + 8y square is double the slope of the other line then h square =

ayush

9 Years agoGrade 9

2 Answers

Nayak Roshan

9 Years ago

He let the slopes of two lines be m1 and m2. Therefore given is 2m1=m2.

In the given equation there are two straight lines. Buy some derivation you get m1 + m2 = -2h/b and m1m2=a/b.

Here the equation is of the form ax²+ 2hxy + by^2. which gives a=3,b=8.

Solving: m1+m2 = -2h/8 , but 2m1=m2.

Therefore 3m1= -2h/8

m1=-2h/24. (Eq-1).

And m1m2=a/b,

Therefore m1 (2m1)=3/8

2ml²=3/8

m1= root3/4. (Eq-2).

Equating 1 and 2 , -2h/24=root3/4

-2h=6 (root3)

h= (-3(root3))

h²=(-3(root3))²

h²=9×3=27

For the proof related to those formulas please refer your notes or coaching material but I have solved you the problem....

HOPE THIS HELPED YOU....

Nayak Roshan

9 Years ago

Are you the candidate of BASE BANGALORE. And if yes please refer to that material it's good even i am a candidate of that coaching institute.....

What is a binomial expression?

algebra

1 Answer Available

Last Activity: 2 Years ago

Can we divide two vectors? If this is possible then how?

algebra

1 Answer Available

Last Activity: 2 Years ago

How do you write “the product of 18 and q” as an algebraic expression?

algebra

1 Answer Available

Last Activity: 2 Years ago

दहावीच्या आय सी एस इ विद्यार्थ्यांनी पुढे काय करायला पाहिजे

algebra

1 Answer Available

Last Activity: 3 Years ago

Find the least number of square tiles by which the floor of a room of dimensions 16.58 m and 8.32 m can be covered completely. why HCF and not LCM as “least” keywor dis given?

algebra

1 Answer Available

Last Activity: 3 Years ago

View all Questions