The last number is 110

Answer:
70°
Step-by-step explanation:
90 + 20 + x = 180
110 + x = 180
x = 180 - 110
x = 70°
Answer:
60 degrees
Step-by-step explanation:
The angles are 30 and 90 degrees ( i think it was 30 degrees it wasn't a clear picture. )
A triangle it 180 degrees in total.
SO if we add 30 and 90
30 + 90 = 120
We'll get 120.
We then suptract 120 from 180
180 - 120 = 60
So the degree of x will be 60 degrees.
120 + 60 = 180