Answer:
15 units
Step-by-step explanation:
1. Find the corresponding lengths of the triangles.
9/x = x/ (9+16)
9/x = x/25
2. Solve for x.
Multiply both sides by x.
9 = x²/25
Multiply both sides by 25.
225 = x²
Square root both sides to solve for x.
√225 = √x²
x = 15
