Answer:
x=6 degrees
Step-by-step explanation:
I know that 31+(10x-1)=90. Then I have to subtract 31 from 90 to get 10x -1.
That's 59. I solve for x in the equation 59=10x-1.
That is the same thing as 60=10x, which is also the same as 6=x.

To get the 0.12 to repeat, the trick is to subtract 1 from the denominator

Then reduce the fraction.

now add the 3 to get
(5x+3) is the width, its factors form is (5x+3)(3x-5)
Answer:
720 - 1 x 2 x 3 x 4 x 5 x 6
0.14% - 1/170