math 8th grade
posted by cody gilliam on .
One of a pentagon's sides is 3 feet longer than the other. If the perimeter of the pentagon is 128m, how long is the longest side?
Your opening sentence is not clear.
Are you saying that 4 of the sides are equal and one is 3 feet longer?
If that is the case, let each of the equal sides be x
then the longer side is x+3, and
x + x + x + x + x+3 = 128
longer side is 18, the others are 15
minus one of those 25
Reiny did it right except i x=25 not 15
of course 125/5 = 25 , silly of me