Question

108=ab^3
sove for a

Answer 1

divide both sides by b^3

Answer 2

108/b^3=a

Answer 3

Yup!

Answer 4

is that the answer?

Answer 5

Yes!

Answer 6

my textbook says its supposed to be 12/b

Answer 7

Maybe the problem is 108=(ab)^3 that the "a" is also to the third power. Right?

Answer 8

no, there are no parenthesis

Answer 9

Ok, if the problem is \[\huge\color{blue}{ 108=ab^3 }\]then the answer, as you said, is\[\huge\color{blue}{ a=\frac{108}{b^3} }\]

Answer 10

http://www.classzone.com/cz/books/algebra_2_2007_na/secured/resources/applications/ebook/index.jsp

Answer 11

thats the online textbook page for the problem

Answer 12

If the problem is \[\huge\color{blue}{ 108=(ab)^3 }\] then\[(108=4 \times 27=4 \times 3^3)~~~~~~~~~~\huge\color{blue}{ 4 \times 3^3=(ab)^3\ }\]
\[\huge\color{blue}{ 4=\frac{(ab)^3}{3^3} = \frac{(ab)}{3} }\]Knowing that\[ \frac{ab}{3} =4~~~~~~~~->~~~~~~~ab=12~~~~~~~->~~~~~~a=12/b\]

Answer 13

You link requires login.

Answer 14

your link..:)

Answer 15

that doesn't, its example 1

Answer 16

Sorry, I don't have an app for that on my comp.

Answer 17

But is it 1 of the two things I posted in blue?

Answer 18

yes, the first one, but the answer is the answer of the second one

Answer 19

All I know is that to the first one the answer is 108/b^3
and to the second one I posted is 12/b

Answer 20

Screen Shot 2014-02-09 at 6.43.08 PM

Answer 21

can u open that?

Answer 22

Sorry, no.