Question

pls help me on this !!!

Answer 1

Answer:

9

Step-by-step explanation:

To solve this question you need the formula of hypothenuse theorem, I personally use $a^{2} + b^{2} = c^{2}$.

Since $c^{2}$ is the hypothenuse, and the hypothenuse in this case is 15, the equation will be $12^{2}+ b^{2} = 15^{2}$.

144+$b^{2}$=225

subtract 144 from both sides

$b^{2}$= 81

$\sqrt{b^{} } = \sqrt{81}$

b=9