If your trying to solve for x it’s 40, x=40
2 times 1/2x =2x20
x=2x20
x=40
Answer:
1080°
Step-by-step explanation:
formula to find the sum of interior angles of a polygon is (n-2)×180
octagon has 8 sides so n=8
(8-2)×180
6×180
=1080°
Y=|x-7|-9 because up seven and down nine
I pretty sure the answer is 6.25 hr.
I added 60 and 65. I divided that number with 20.
Let

the length and

the width. By the ratio of the sides:

Now, we'll find the perimeter p. We'll use the formula below:

The area of a rectangle is

. Then: