Answer:
4[tex]\sqrt{13}[/tex] or 4[tex]\sqrt{5}[/tex]
Step-by-step explanation:
Pythagorean theorem:
your solution will differ based on which side is the hypotenuse
x = [tex]\sqrt{12^{2} -8^{2} }[/tex] =4[tex]\sqrt{5}[/tex]
or x = [tex]\sqrt{8^{2}+12^{2} }[/tex] = 4[tex]\sqrt{13}[/tex]
