Question

the length of a rectangle is 3 times the width. the perimeter is 96 cm. find the width and length.

Answer 1

L = 3W
2L + 2W = 96

Solve simultaneously and you get l=36, w=12

Answer 2

sheg how did you get that

Answer 3

Sheg's answer clearly isn't right since the perimeter of such a figure is not 96

Answer 4

moneybird's answer is also not right

Answer 5

That is given

Answer 6

yes they are wrong

Answer 7

it should be 4w = 48
so w = 12
length = 36

Answer 8

l=36, w=12 as I said in my original answer

Answer 9

ktklown you are right how did u get that

Answer 10

The length is 3 times the width, so L=3W
The perimeter is the sum of the four sides, two lengths and two widths.
2L + 2W = 96

Then you solve simultaneously.

Answer 11

Since L=3W, substitute that into the 2nd equation

2(3W) + 2W = 96
6W + 2W = 96
8W = 96
W = 12

Answer 12

yeah in hurried ness i divided 96 by 16 instead of 8
so uit should be 96/8 = 12
so width = 12
length = 36

Answer 13

how do u find the length

Answer 14

L=3W

Answer 15

In general once you've solved for one variable in a system of two equations, just plug that value into either of the other two equations (whichever looks easier)

Answer 16

You have two equations, L=3W and 2L+2W=96. Once you have W you just plug the value for W into either one of those equations and solve.

Answer 17

so can you please solve 2l+ 2w= 96 please

Answer 18

What part are you having trouble with

Answer 19

finding the lenght

Answer 20

So substitute the width into either equation. The other equation is probably easier.

Answer 21

can u please show me how it is supposed to look please

Answer 22

Take the equation you had, L=3W
and substitute in W=12

Answer 23

can u just solve it for me cuz i dont understand

Answer 24

do you know what "substituting" means?

Answer 25

yes

Answer 26

OK so can you substitute W=12 into the equation L=3W?

Answer 27

ok

Answer 28

what do you get

Answer 29

36

Answer 30

thats the answer

Answer 31

thank you