Answer:
8<x<12
Step-by-step explanation:
We know that sum of any two side of triangle is greater then 3th side, so we have:
x+8>4
x+4>8
4+8>x
i.e
x>-4
x>4
12>x
We can conclude that 4<x<12.
From the picture x is the biggest, x must be greater than 8.
So we have 8<x<12
