SOLUTION: Find the width and length of the rectangle so that it has the given perimeter: P = 60 inches, width is x, and length is 3x – 5.

Algebra ->  Expressions-with-variables -> SOLUTION: Find the width and length of the rectangle so that it has the given perimeter: P = 60 inches, width is x, and length is 3x – 5.      Log On


   

Question 128002: Find the width and length of the rectangle so that it has the given perimeter:
P = 60 inches, width is x, and length is 3x – 5.
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Length = l
Width = w
w+=+x
l+=+3x+-+5
P+=+2w+%2B+2l
60+=+2x+%2B+2%283x+-+5%29
60+=+2x+%2B+6x+-+10
8x+=+70
x+=+8.75
w+=+8.75
l+=+3x+-+5
l+=+3%2A8.75+-+5
l+=+21.25
Width is 8.75 inches and length is 21.25 inches
check:
60+=+2x+%2B+2%283x+-+5%29
60+=+2%2A8.75+%2B+2%283%2A8.75+-5%29
60+=+17.5+%2B+2%2826.25+-+5%29
60+=+17.5+%2B+42.5
60+=+60
OK