find the length of leg x
x=
side a is 15
side b is 12
side x=

Answer:
x=9
Step-by-step explanation:
a=hyp=15
b=base=12
x=perp=?
using pathagorus theorem:
[tex] {hyp}^{2} = {base}^{2} + {perp}^{ 2} \\ {15}^{2} = {12}^{2} + {x}^{2} \\ 225 = 144 + x \\ 225 - 144 = {x}^{2} \\ 81 = {x}^{2} \\ x = 9[/tex]