Question

GOOD AT MATH!! PLEASE HELPPP

Answer 1

Answer:

B. 5

Step-by-step explanation:

Use the pythagorean theorem to solve: $a^{2}$+$b^{2}$=$c^{2}$.

$a^{2}$+$12^{2}$=$13^{2}$

$a^{2}$+144=169

Subtract 144 from 169.

$a^{2}$-144=169-144

$a^{2}$=25

Square root to get a.

$\sqrt{a}$=$\sqrt{25}$

a= 5

Answer 2

Square root of 13^2 - 12^2 = 5