82÷2=2÷2(1-8p)
41=(1-8p)
41=1-8p
41-1=1-1-8p
40=8p
40÷8=8p÷8
5=p
Answer:

Step-by-step explanation:
Given
The attached circle
Required
Find the measure of x
From the attached image:
and
form a semi-circle
So:

Collect like terms


Solve for x


7/3 3 I think that is the answer good luck