Answer:
Step-by-step explanation:
Idk
I think 20 is the answer of the question
Should be D. F(X) = 1 over x+1
a) Let .
Observe that
b)
Let
c)
d)
y=49
The entire angle is equal to 180, so you take the part of the angle you do know (131) and subtract it by 180 to get the answer.