SOLUTION: Please help i don't understand this at all! Q: Elin wants to fence two different garden plots in her back yard with two rolls of fencing that are the same length. Write and solve

Algebra ->  Expressions-with-variables -> SOLUTION: Please help i don't understand this at all! Q: Elin wants to fence two different garden plots in her back yard with two rolls of fencing that are the same length. Write and solve       Log On


   



Question 1051607: Please help i don't understand this at all!
Q: Elin wants to fence two different garden plots in her back yard with two rolls of fencing that are the same length. Write and solve an equation to find the value of X so that the figures below have the same perimeter.
Right-angled triangle: 2x-7, 2x-5,x-1
Rectangle:3x-11, x-3
please help thanks

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
triangle
P = 5x - 13
Rectangle: P = 2(3x-11) + 2(x-3)
P = 8x - 28
5x - 13 = 8x - 28
15 = 3x
5 = x
checking
25 - 13 = 40-28 = 12 CHECKS