Question 234518: a square plywood platform has a perimeter which is 7 times the lenght of side, decreased by 21. find the lenght of a side Answer by nyc_function(2741) (Show Source):
You can put this solution on YOUR website! A square is equal on all 4 sides.
The perimeter = 7s - 21
The perimeter of a square formula is P = 4s, where s represents the side of the square.
7s - 21 = 4s
Solve for s and you will find the answer.
Can you do it now?
