Answer:
w==77
Step-by-step explanation:
The sum of the 2 opposite interior angles equals the exterior angle.
w-36 +w-20=w+21
combine like terms: 2w-56=w+21
subtract w from both sides: w-56=21
add 56 to both sides: <u>w=77</u>
It should be 34/5*. If you create an improper fraction out of the original one, then creating the reciprocal will be easier.
A9x) = x^2 - 6x + 9 = (x - 3)^2
length of a side = x - 3
