Answer:
x = 8 in
Explanation:
Since this is a right triangle, we can use the Pythagorean theorem.
a^2 +b^2 = c^2 where a and b are the legs and c is the hypotenuse
15^2 +x^2 = 17^2
225 + x^2 = 289
Subtract 225 from each side
225-225 + x^2 = 289-225
x^2 = 64
Take the square root of each side
sqrt(x^2) = sqrt(64)
x = 8