Question

Help

Solve.

2(a + 4) + 6a = 48

a = _________


Question 5.5. The width of a rectangle is 8 cm less than its length. The perimeter of the rectangle is 52 cm.

What is the width of the rectangle?
(Points : 1)
7 cm
9 cm
15 cm
17 cm

Answer 1

@iGreen

Answer 2

2(a + 4) + 6a = 48

Distribute:

2a + 8 + 6a = 48

Subtract 8 to both sides:

2a + 6a = 40

Add:

8a = 40

Divide 8 to both sides:

a = 5

Answer 3

@Xgloves11

Answer 4

none of the answers are five

Answer 5

if you look in your book it will tell you something

Answer 6

What are your answer choices for your 1st question? @Xgloves11

Answer 7

A.7
B.9
C.15
D.17

Answer 8

For the 2nd question, plug in what you know from the Perimeter formula.

P = 2L + 2W

Where P = Perimeter, L = Length, and W = Width.

52 = 2(8) + 2W

52 = 16 + 2W

36 = 2W

w = 18

Answer 9

oh thx

Answer 10

2(a + 4) + 6a = 48

Distribute.

2a + 2(4) + 6a = 48

Answer 11

Simplify now.

2a + 8 + 6a = 48

Now combine like terms. Do you know how to do that?

Answer 12

yes i think it is A or B

Answer 13

6a + 2a = 8a

So:

8a + 8 = 48.

After this, I think you subtract eight and then divide to get your answer(: try it and see what happens.

Answer 14

@iGreen wow I got the same answer as you...

Answer 15

me too its 5

Answer 16

okay great! So I got the right answer(:

Answer 17

Did my answer help you in any way?

Answer 18

yea it was right thx

Answer 19

no problem(: I have a question, what are medals for? I'm new so this is a stupid question but ... like everyone wants them or something?

Answer 20

You give medals to people who have helped you answer your question.

Answer 21

gotcha

Answer 22

its basically points to get an award like get 500 medals and you can become a mathlete @AubzQuintanilla

Answer 23

Lol like me :P

You also need 500 smartcents, which you get from medals.

Answer 24

wow