Answer:
18 units
Step-by-step explanation:
-5+1+-2+9v+-5v
-3+1+4v
-2+4v
9. a) 180 - (55+90) = a
b) a=35 degrees
10. a) 2w + 3w + 40 = 180
b) w=28
c) 2w=56 3w=84