Respuesta :

Answer:

x = 3

Explanation:

The one way you can figure this out is by using Pythagorean Theorem (a^2 + b^2 = c^2). If you did that, you’d get:

4^2 + b^2 = 5^2

If you solved this problem, you’d get b = 3.
thebecks

Answer:

A) x=3

Step-by-step explanation:

5^2-4^2=9

x=sq rt 9=3