SOLUTION: Which point is a focus of the graph of x^2/64 + y^2/36 =1 A.(10,0) B.(0,-10) C.(-2sqrt7,0) D.(0,-2sqrt7) E.(0,-7sqrt2) Thank you!

Algebra ->  Quadratic-relations-and-conic-sections -> SOLUTION: Which point is a focus of the graph of x^2/64 + y^2/36 =1 A.(10,0) B.(0,-10) C.(-2sqrt7,0) D.(0,-2sqrt7) E.(0,-7sqrt2) Thank you!      Log On


   

Question 181826: Which point is a focus of the graph of
x^2/64 + y^2/36 =1
A.(10,0) B.(0,-10) C.(-2sqrt7,0) D.(0,-2sqrt7) E.(0,-7sqrt2)
Thank you!
Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
A is the answer
:
c=sqrt%2864%2B36%29
:
c=10
:
foci is at ((0+10),0) and at ((0-10),0)
:
so at (10,0) and (-10,0)