Answer:
∠D = 180°- ∠A
∠D = 180° - (30+5x)
15+10x = 180° - 30-5x
15x = 180 - 30 - 15
15x= 135
x = 9
Answer: C)
Step-by-step explanation:
Sight.
1
I guessed on the problem and it was right
b
