the length of a rectangle garden is 2 more than 3 times the width. the perimeter is 100 ft. find the length and width?
so L=3x+2
and p=100
100=3x+2+w
i gues this im so confused?
2007-09-05 14:00:02 · 2 answers · asked by dreamz 4 in Science & Mathematics ➔ Mathematics
*100=3x+2
true?
2007-09-05 14:01:01 · update #1
We need to change things a little
W = x
L = 3x + 2
P = 2L + 2W = 100
L + W = 50
L + W = 50
(3x + 2) + x = 50
4x + 2 = 50
4x = 48
x = 12 ft
W = x = 12 ft
L = 3x + 2 = 3*12 + 2 = 38 ft
2007-09-05 14:08:05 · answer #1 · answered by Northstar 7 · 1⤊ 0⤋
use variables like w for width and l and p. not x its kinda confusing that way.
Set it up as a system and solve it that way
so
L =2+3w
100 = 2(w) + 2(L)
Plug L into the second equation (since L is given to you) and find w. Then when you know w (and checked it) you should plug w into the second equation to find L.
2007-09-05 21:13:31 · answer #2 · answered by Amy 1 · 0⤊ 0⤋