2006-09-23 04:21:12 · 4 answers · asked by vencedersonflow 1 in Education & Reference ➔ Standards & Testing
15
2(x+5) + 2x = 70
4x + 10 = 70
4x = 60
x = 15
2006-09-23 04:29:40 · answer #1 · answered by Carter S 2 · 0⤊ 0⤋
20 inches.
You set up the equation x+(x+5)+x+(x+5)=70 then simplify it to 4x+10=70. Subtract 10 from both sides to get 4x=60. Then divide both sides by 4 to get 15. This is the width of the rectangle. You add 5 to that answer to get the perimeter. To check your work, add 15+20+15+20. You get 70, so the answer is correct.
2006-09-23 11:31:02 · answer #2 · answered by ♥me 2 · 0⤊ 0⤋
let the width be X inches.
length = 5+ X inches.
perimeter = 2(length) + 2(width) = 2(5+X) + 2X = 70
10 + 4X = 70
4X = 60
X = 15
therefore length = 5+ X = 20 inches
2006-09-23 12:44:47 · answer #3 · answered by J S 3 · 0⤊ 0⤋
He asked for the length - the answer is 20"
2006-09-23 11:30:52 · answer #4 · answered by Essex Ron 5 · 0⤊ 0⤋