Question

Help pls !! thank you so much .

Answer 1

a = 12

Explanation:

Pythagorean Theorem: a^2 + b^2 = c^2

a^2 + 9^2 = 15^2 >> solve the exponent

a^2 + 81 = 225 >> subtract both sides by 81

a^2 = 144 >> square root

a = 12

Answer 2

uhh i think its 5 ignore this wishsbsns