Question

Can anyone explain to me why my answer is wrong here?

http://puu.sh/7kejh.png

Answer 1

you know the perimeter is 32. so l+w=32

the length is 2two feet longer than width so length is W+2

Answer 2

So should it be 30? I just dont get it I followed the instructions on how to do the problem.

Answer 3

so w+w+2=32

and 2w+2=32

Answer 4

so 15?

Answer 5

2w=30 then divide both sides by 2 w=15?

Answer 6

yes

Answer 7

so what is L

Answer 8

17?

Answer 9

ACK ... sorry.. i made a mistake

Answer 10

Uh oh alright whats up

Answer 11

the perimeter is the SUM of all sides

so it should be 2w+2l=32

2w+2(w+2)=32
4w+4=32

Answer 12

\(\bf length=l\qquad width=w
\\ \quad \\
perimeter=l+l+w+w\implies 2l+2w=32
\\ \quad \\
\textit{length is 2ft longer than width}\implies l={\color{blue}{ w+2}}
\\ \quad \\
perimeter=2l+2w\implies 2({\color{blue}{ w+2}})+2w=32\implies 2w+4+2w=32
\\ \quad \\
4w+4=32\implies 4w=32-4\implies 4w=28\implies w=?\)

Answer 13

7?
The width is 7 then?

Answer 14

yes thats it
sorry

Answer 15

yeap

Answer 16

making the length 9?

Answer 17

7+2 = 9, yes

Answer 18

Thank you very much I will remember that.

Answer 19

yes

Answer 20

yw

Answer 21

ou can check it by 2(9)+2(7)=32

Answer 22

GOOD LUCK!!!

Answer 23

it be 7 for width and 9 for length. 7+7+9+9=32
it cant be 8+8+10+10 because that equals 36