Correct Answer: D
Explanation:
In order to solve this problem, we need to break down each word.
We need to first find the complement of 40°.
The complement is
90 = x + y
Since we are given an angle of 40° we can substitute it for x, and solve for y.
90 = y + 40
y = 50
Now since we need to find the supplement of the answer, we just got.
The supplement is
180 = x + y
Now we simply substitute the answer we just got for x.
180 = y + 50
y = 130
So the answer is 130°