Respuesta :

mlarsen5000

Answer:

x=15.2

Step-by-step explanation:

x²+27²=31²

x²+729=961

x²=961-729

x²=232

x=√232

x=15.23

faylilly

Answer:

a2+b2=c2

c2-a2=b2

961-729

=232 (2)

x=15.2