Answer:
4s
Step-by-step explanation:
The perimeter of a square is 4 times it's side length.
Formula for a perimeter of a square: 
s - side length
Hope this helps.
B. 6.72the answer is B 6.72
Answer:
9 /(19+9) = 9/28
Step-by-step explanation:
i hope this helps. :)
I think the answer is both x and y are positive