Answer:
D. 110
Step-by-step explanation:
First let's start by finding the measure of Angle ACB. Since angles in a triangle add up to 180 degrees:
ACB=180-(50+60)
ACB=180-110
ACB=70
We can also see that Angle X is supplementary/linear pair with Angle ACB. This means that Angle X+Angle ACB is equivalent to 180 degrees.
So...
x=180-ACB
x=180-70
x=110 degrees
