Respuesta :

leena

Hello!

[tex]\large\boxed{x = 15}[/tex]

Use the Pythagorean Theorem to solve for x:

a² + b² = c²

We are given the lengths of two sides, so we can plug those into the formula:

9² + 12² = x²

81 + 144 = x²

225 = x²

√225 = x

x = 15.