Sunday

March 29, 2015

March 29, 2015

Posted by **Martin** on Saturday, March 10, 2012 at 12:37am.

7x^2 - 5y^2 + 20y = 3

21x^2 + 5y^2 =209

- math -
**Steve**, Saturday, March 10, 2012 at 5:57amsince 7x^2 = 5y^2 - 20y + 3

21x^2 = 15y^2 - 60y + 9

plug that into the 2nd equation to get

20y^2 - 60y - 200 = 0

y^2 - 3y - 10 = 0

(y-5)(y+2) = 0

From there you can see that the circle and the hyperbola intersect at

(3,-2) (-3,-2) (2,5) (-2,5)

**Answer this Question**

**Related Questions**

Algerbra - how do you solve 7(3x+4)=8(2x+5)+13 expand the parenthesis...I will ...

math - still can't solve .32x + .20y = 3.92 it's my last math question for the ...

Math - solve the system of linear equations using the addition method. Can you ...

Pre-Calc/Trig - Complete the following for each system that involves one or more...

math 209 - The perimeter of a rectangle is 44ft the length is 4ft longer than ...

math - can anyone help with this? suppose you bought some 32 cents stamps and ...

inequality expresion - The cost of a long distant telephone call is $0.36 for ...

pre calculus - Ok not sure if it's just me with a block solve the following ...

FInite Math - -.30x+.20y +.25z =0 .20x -.40y +.05z =0 .10x +.20y -.30z =0 x=? y...

FInite Math - -.30x+.20y +.25z =0 .20x -.40y +.05z =0 .10x +.20y -.30z =0 x=? y...