Answer:
5
Step-by-step explanation:
4² + 3² = c²
(4 x 4) + (3 x 3) = c²
16 + 9 = c²
25 = c²
5 = c
AC=5
[tex]x^{2} =3^{2} +4^{2} \\x^{2} =9+16\\x^{2} =25\\x=\sqrt{25}[/tex]
x=5
