Question #f6259
1 Answer
Aug 14, 2017
Explanation:
The equation for the perimeter of a rectangle is
P = 2l + 2w
where
-
l is the length of the rectangle -
w is the width of the rectangle
We're given:
-
P = color(red)(8x-4 -
w = color(green)(x-4
Plugging these in:
color(red)(8x-4) = 2l + 2(color(green)(x-4))
Simplifying:
8x-4 = 2l + 2x - 8
Now we solve for
Subtract
6x - 4 = 2l - 8
Add
6x+4 = 2l
Divide both sides by
color(blue)(ulbar(|stackrel(" ")(" "l = 3x+2" ")|)
The length of the rectangle (in terms of