Question

What is the value of a?

http://static.k12.com/bank_packages/files/media/mathml_bd2b22e3bc6bf1665d84f54d46993653513a6439_1.gif
a=__

Answer 1

@swissgirl

Answer 2

@nincompoop

Answer 3

@perl

Answer 4

@paki

Answer 5

@Jhannybean

Answer 6

Hi xD

Answer 7

\[5(a-4)-8a=55\]distribute\[5a-20-8a=55\]keep all your a's on one side and numbers on the other, therefore you need to add 20 to both sides.\[5a-8a = 55 + 20\]combine like terms.\[a(5-8) = 75\]\[-3a=75\] divide both sides by -3\[a = \frac{75}{-3}\]This will give you your answer )

Answer 8

-25

Answer 9

The length of a rectangle is 8 in. more than its width. The perimeter is 52 in.

What is the length of the rectangle?

Answer 10

@Jhannybean last one

Answer 11

P = 2l + 2w

Answer 12

23a?

Answer 13

P = 2(8+w) +2w

52 = 16 + 2w +2w
52 = 16 +4w
4w = 52 - 16
4w = 36
w = 9 in

So if l = 8 + w, and w = 9, what is the length? Plug in w.

Answer 14

That's it :) Toodles!

Answer 15

oh

Answer 16

thanks xD

Answer 17

so its 23? xD

Answer 18

No. l = 8 + 9

Answer 19

ohh 17

Answer 20

duhhh -.- i am so so sorry

Answer 21

No problem.