Question

This is a right triangle. What is the value of x

Answer 1

4^2+x^2=5^2
16+x^2=25
*subtract 16 and subtract it from 25
x^2=9
*find square root of 9
x=3

Answer 2

A^2+b^2=c^2

Change the equation to suit the problem

c^2-a^2=x^2
5^2-4^2=x^2
25-16=x^2
9=x^2
Square root
3=x

The value of x is 3