Answer:
123.2 is the answer
y=130°
Step-by-step explanation:
180-(90+40)
180-130
50°
y=180°-50°
=130°
a=9
b=9
c=18
c(a+b)+a+b=36
2a+2b=36
a+b=18
<em>C. 1/(4^10)</em>
9x5=45