Answer:
circumference = 194.68
Step-by-step explanation:
c = π2r
c = (3.14)(2)(31) = 194.68
Y=9x-2
3x-2y=7
3x-18x+4=7
-15x=3
x=-1/5
y= -19/5
6. If you take 216 and cube root it and you get six. and just to check you can do 6*6*6. 6*6=36 36*6=216.
Hope this helped!