Question

can sumone heeeeeeelp meee with thiiiis its homework and im about to give uup like this just question 1 and im already tired pleeaaseeeee

Answer 1

Answer: C— 9 m

Steps:
a^2 + b^2 = c^2
12^2 + b^2 = 15^2
144 + b^2 = 225
b^2 = 81
b = 9

Answer 2

Answer:

C.  9 m

Step-by-step explanation:

The Pythagorean theorem says

$leg_{1} ^{2} + leg_{2} ^{2} = hyp^{2}$

Let the third side, which is a leg, = x

$12^{2} + x^{2} = 15^{2}$

144 + $x^{2}$ = 225

$x^{2} = 81\\x = \sqrt{81} = 9$

C.  9 m