Question

A rectangle has a length of 10 inches and a perimeter of 48 inches. Which equation could be used to find the width of the rectangle?








A.

48 = 20 – 2w








B.

48 = 10w








C.

48 = 20 + 2w








D.

48 = 40w

Answer 1

@Skiller8860 plz help me

Answer 2

The formula for the perimeter of your rectangle is
2L+2W=48

We know your length so let's plug that in..
2(10)+2W=48

Answer 3

What does 2 * 10 give you?

Answer 4

20

Answer 5

Correct, so we now simplify for W.

20+2W==48
___________________
How do we get rid of the 20 on the side of 2W?

Answer 6

Do you know how?

Answer 7

no

Answer 8

We subtract 20 from both sides of the equation. Meaning we do this..

20+2W=48
-20 -20
------------
2W= ...

What does 48-20 give you?

Answer 9

it would be good to be able to solve for w, but the question only asks for the equation

Answer 10

28

Answer 11

Correct so you have left over

2W=28

Now we get rid of the 2 beside the variable W. Opposite of multiplication is what?

Answer 12

division

Answer 13

Correct, so we will have to divide both sides by 2 to get W (width) by it's self.

So 2 divided by 2 cancels that out.

What we do to one side, we must to do the other,

Now what is 28 divided by 2?

Answer 14

14

Answer 15

So the final width would be 14. Now your answer to solve that problem would be C. 48 = 20 + 2w

Thought I'd walk you through the steps so I could thoroughly explain it :).

Answer 16

lol thx so much

Answer 17

Anytime, glad I could help you.

Answer 18

–52 – (–27)

Answer 19

2 years ago