## Algebra 1

$y=7$
To solve this equation, we are going to use the Pythagorean Theorem, which is: $a^2+b^2=c^2$ When we substitute the variables for our numbers, we get: $24^2+y^2=625$ (In this expression, $y$ represents $b$) Next, we have to expand the square roots into: $576+y^2=625$ If you subtract $576$ from both sides, you get: $y^2=49$ Next, you take the square root of both sides. $\sqrt y^2=\sqrt 49$ Therefore, you arrive at your final answer, which is: $y=7$