The average value is given by

Setting

, you get

, and the integral becomes


Step-by-step explanation:
Given
5x + 2x + 2 = 9x + 4
9x - 5x - 2x = 2 - 4
9x - 7x = - 2
2x = - 2
x = - 2 / 2
Therefore x = -1.
First answer is correct because angles DAB and EAD equal 180 degrees (supplementary)
Answer:
The first one
Step-by-step explanation:
The decimals line up when you subtract them