9514 1404 393
Answer:
C) 40°
Step-by-step explanation:
The given angles are opposites, so will be equal to each other:
4x +4 = 6x -14
18 = 2x . . . . . . . . . . add 14-4x
9 = x
Then the angle measure is ...
∠ACD = (4(9) +4)°
∠ACD = 40°
