Question

An someone please help.

Answer 1

I believe the answer is 6

Answer 2

This is a special right triangle with 3 sides that are 5, 12, 13. You should remember this triangle.

`{13}^(2) = {x}^(2) + {12}^(2) \\ {x}^(2) = {13}^(2) - {12}^(2) \\ x = \sqrt{ {13}^(2) - {12}^(2) } = √(169 - 144) = √(25) = 5`