MATH PERIMETER!help quick.Just give equation not the answer!?

2 ⤊

MATH PERIMETER!help quick.Just give equation not the answer!?

perimeter 30.
table is twice as long as it is wide.
what is the lenght?

2007-10-21 15:13:43 · 3 answers · asked by miss s 2 in Science & Mathematics ➔ Mathematics

sorry i couldnt seem to find it !

2007-10-21 15:17:02 · update #1

3 answers

Perimeter of a rectangle = (2 x Length) + (2 x Width)
( or the sum of all sides )

x = width
2x = length
30 = 2(2x) + 2x
30 = 4x + 2x
30 = 6x

5 = x (width)
10 = 2x (length)

2007-10-21 15:23:57 · answer #1 · answered by edith p 3 · 0⤊ 0⤋

Let x = the length, 1/2x = the width.

Answer: 2(x + 1/2x) = 30

2007-10-21 22:25:36 · answer #2 · answered by Jun Agruda 7 · 2⤊ 0⤋

x + x + 2x + 2x = 30

The equation can be simplified, but you get the idea.
Let x be the width, and 2x be the length.

2007-10-21 22:23:46 · answer #3 · answered by SoulDawg 4 UGA 6 · 0⤊ 0⤋