Algebra : ) my favorite!
the perimeter of a square is 80-64y units. which expression can be used to show the side length of one side of the square?
16y(5-4) each side measures 5-4 units.
4(20-16y) each side measures 20-16y units.
4y(20-16) each side measures 20-16 units.
explain for future reference, i have come across several of these problems, and i don't understand how to solve them. make sure you are absolutely positive of your answer, .
also, take your time to answer. i am in no hurry.