can somebody please help my friend, she has asked everyone she knows and nobody knows how to solve it. please help ty

Answer:
42
Step-by-step explanation:
First I'm going to assume that C and A are perpendicular.
Because its perpendicular, this creates a 90 degree angle which can be used to create the following equation.
[tex]90 = 6x - 6 + 5x + 8[/tex]
Reduce
11x = 88
x = 8
We then plug in 8 into the equation 6x - 6 in order to solve for that angle.
6(8) - 6
42