Respuesta :

someone000

The answer is 7.48 Using the pythagreom theorm.

[tex] {a}^{2} + {b}^{2} = {c}^{2} \\ {5}^{2} + {b}^{2} = {9}^{2} \\ 25 + {b}^{2} = 81 \\ 81 - 25 \\ {b}^{2} = 56 \\ the \: square \: root \: of \: 56 \\ b = 7.48[/tex]