Answer:
x = 4°
Step-by-step explanation:
18x + 5 = 46 + (-1 + 8x) theory of exterior angles of a triangle
18x + 5 = 46 - 1 + 8x
10x + 5 = 46 - 1
10x + 5 = 45
10x = 40
x = 4
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-Chetan K
Answer:

Step-by-step explanation:

Factor:
- > 
-> 
-> factor out 
-> 
Answer:
682/15
Step-by-step explanation:
I'm not entirely sure about this one, but
A. 40°
B. 100°
C. Idk :P