Question

Which equation can be used to find x, the length of the shorter leg?

x(x + 7) = 13
x(x + 7) = 169
x2 + (x + 7)2 = 13
x2 + (x + 7)2 = 169

Answer 1

Answer:

x2 + (x + 7)2 = 13

Explanation:

Because none of the others are corrrect

Answer 2

Answer:

D is the correct answer.

Explanation:

You can plug in 5 to x and get 169.

5^2 + (5 + 7)^2 = 169

25 + (12)^2 = 169

25 + 144 = 169

Therefore, D is the correct answer.