Question

NEED HELP ASAP algebra 2​

Answer 1

Answer:

$8\sqrt{2}$

Step-by-step explanation:

Step 1: Use Pythagorean Theorem to find the length of the hypotenuse

$a^{2}+b^{2} =c^{2}$

$9^{2}+7^{2} =c^{2}$

$81+47 =c^{2}$

$128 =c^{2}$

$\sqrt{c^{2} } =\sqrt{128}$

$c=\sqrt{128}$$\sqrt{128} =8\sqrt{2}$

Therefore the third side is $8\sqrt{2}$