Answer:
5.5 < x < 10.5
Step-by-step explanation:
According to the Triangle Inequality Theorem, the sum of the lengths of any two sides of a triangle is greater than the length of the third side.
8.0 + 2.5 > x -----> x < 10.5
2.5 + x > 8.0 -----> x > 5.5
So 5.5 < x < 10.5
