Question

ABC is a right triangle. if AC = 15 and BC = 17, find AB. A. 23 B. 4 C. 64 D. 8

Answer 1

Use Pythagorean Theorem. 

15^2+b^2=17^2.

First is exponents.
225+b^2=289

Next get b^2 by itself.
b^2=64

The square root of 64 is 8.

Answer 2

I hope this helps you



AC^2+AB^2=BC^2


15^2+AB^2=17^2


AB^2=17^2-15^2


AB^2=8^2


AB=8