Question

What is the eccentricity of the ellipse given by the equation = x^2/49 + y^2/81 =1?

Answer 1

e = c/a
a = 9
b=7
a^2 = b^2 + c^2
81 = 49 + c^2
c^2 = 32
c = 4sqrt2
\[e = \frac{4\sqrt{2}}{9}\]

Answer 2

0.63
0.81
1.59
1.24

Answer 3

^^^^ choises

Answer 4

ok well which one matches with my answer...use a calculator

Answer 5

here is a ref sheet for these types of equations/graphs, hopefully will help you

Answer 6

you do ralize you couldve just said the right answer?

Answer 7

yes but you should learn how to use your calculator and reason out the answer on your own...i'm here to give help and giudance

Answer 8

dont have a calculator