Question

What is the value of x? ____° b= 70 and a=30 c=x

Answer 1

A + B + C = 180 30 + 70 + X =180 100 + X =180 X =180 - 100 X =80.

Answer 2

Are you talking about a triangle?
If so, the angles in a triangle add up to 180.
70 + 30 = 100
So c must be 80 because 100 + 80 = 180.
x = 80