Question

What is the length of the major axis of the ellipse given by the equation x^2/16 + y^2/100 = 1?
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Answer 1

20

10

8

4

Answer 2

10?

Answer 3

lol i don't know :/

Answer 4

:/

Answer 5

the major axis (the biggest axis) is related to the largest denominator .... the sqrt of the denominators gives us the "semi" axis lengths.

Answer 6

since 100 is bigger than 16, sqrt(100) = 10 is smaller than the overall length; so you want an option that is bigger than 10 (twice as big to be exact)

Answer 7

So A 20 right?