Question

The length of a rectangle is 12 in. more than its width. The perimeter is 64 in.

What is the length of the rectangle?

in.

Answer 1

Answer 2 times the length plus 2 times the width equals perimeter therefore,
2L+2W= P the length is three times the width therefore, L = 3W and you know the perimeter is 96 and inserting 3w for length you get, 2(3W)+2W=96, then 6W+2W=96, then 8W=96. Divide both sides by 8 and you get W=12. The width is 12. And the length is 36.

Answer 2

@babygirl55555
Which problem are you answering?

Answer 3

i need help

Answer 4

@EvaMarire
Let's call the length L and the width W.

The problem states: "The length of a rectangle is 12 in. more than its width."
Since the width is W, what is L equal to in terms of the width?

Answer 5

The width is W.
What do you do to W to get the length?

Answer 6

divide

Answer 7

No.
Use the sentence form the problem.
The sentence is" "the length is 12 in. more than the width."
If the width is W, what is 12 more than W?

Answer 8

add

Answer 9

is it 24

Answer 10

Exactly.

For example:
5 more than 2 is 2 + 5
10 more than 6 is 6 + 10
8 more than x is x + 8
12 more than W is ____________

Answer 11

but 12 + 24= 72

Answer 12

We don't know what W is.
We must keep the width as W.
What is 12 more than W? W + 12

Answer 13

Not quite. 12 + 24 = 36, not 72

Answer 14

Ok, do you understand what I wrote above?
The length is 12 more than the width.
Since the width is W, the length is W + 12.

Answer 15

Now we know this:
width: W
length: W + 12

Answer 16

https://www.google.com/webhp?sourceid=chrome-instant&rlz=1C1GTPM_enUS550US550&ion=1&espv=2&ie=UTF-8#q=perimeter%20of%20a%20rectangle

Answer 17

so the answer 24

Answer 18

Right.
That tells you what the perimeter is.
The perimeter, is P.

P = 2(L + W)

We have L = W + 12, so we get P = 2(W + 12 + W)
We are also told the perimeter is 64, so we can replace P with 64:
64 = 2(2W + 12)

Now we divide both sides by 2:
32 = 2W + 12

Now we subtract 12 from both sides:
20 = 2W

Divide both sides by 2:
10 = W The width is 10.

The length is 12 more than the width, so the length is 10 + 12 = 22

Answer 19

so its 24?

Answer 20

The length is 22 in.

Answer 21

We can check.
The width is 10 in.
12 in. more than 10 in. is 22 in.

P = 2(22 in. + 10 in.) = 2(32 in.) = 64 in.
The problem does state that the perimeter is 64 in., so our answer of length = 22 in. is correct.

Answer 22

its not 20 l=20

Answer 23

No.
Length = 22 in.

Answer 24

can u help with one more

Answer 25

What is the value of x?

Answer 26

http://static.k12.com/bank_packages/files/media/mathml_9005fd4da073716eff3d15c5b2189e220e98decd_1.gif

Answer 27

can u help me

Answer 28

Ok.

Answer 29

Here is the equation:

\(\dfrac{x}{5} + 6 = 36\)

Answer 30

You want to solve for x.
That means you want x by itself.
You need to see what operations are being done to x and you need to undo those operations.

Answer 31

The fraction x/5 means x is being divided by 5.
Then "+ 6" means 6 is being added to the fraction.

Answer 32

To undo the operations, you must undo them in the opposite order they were done.
Also you must use the opposite operation.

Answer 33

7.2

Answer 34

The first operation is the fraction. It is divide by 5.
To undo it we do the opposite operation which is multiply by 5.

The second operation is add 6. To undo it we subtract 6

Answer 35

To undo the operations, we must undo them in THE OPPOSITE ORDER they were done.
That means we start by undoing the addition of 6 by subtracting 6.

Answer 36

36/5

Answer 37

i need help

Answer 38

@mathstudent55

Answer 39

i need hep

Answer 40

Sorry. I lost connection. It always happens when I am on OS for a while.

Answer 41

When you deal with an equation, you must do the same operation to both sides of the equation.
Since we need to start by subtracting 6, we subtract 6 from both sides.