Answer:
122 degrees-
Step-by-step explanation:
Angle GOA is a vertical angle with angle DOE, so it has the same measure (vertical angles are congruent).
Angle AOC is a right angle because angle COE is a right angle.
The domain would be known as the list of the x which in this case would be listed as 1,2,4,7.
Step-by-step explanation:
4x+5x=180 (allied angles)
9x=180
x=180/9
x=20