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Mathematics 9 Online
OpenStudy (anonymous):

I need some help! I just need someone to check my answers! If I have anything wrong, It would be appreciated if you told me what I did wrong and how I can correct it.... I really need some help, and I need it fast. Please and thank you to whoever can help me! :) http://answers.yahoo.com/question/index?qid=20120311111200AAtODgL

OpenStudy (anonymous):

I know it a lot of question but like, said before, I only need them checked....

OpenStudy (anonymous):

*I know it's a lot of questions but, like I said before, I only need them to be checked.... sorry for the spelling error, hehehe :)

OpenStudy (chriss):

So far I've only actually checked the first one. Although it looks like you are going to have the same thing in some of the other problems. For the first problem, I get 3ab as the answer. Remember that in a given term, you can multiply the coefficients together and put that product to the front of the term so in the case of 6a4b^2+9a3b you get 24ab^2 for the first term and 27 ab for the second giving you 24ab^2+27ab. So of course the only common factor for the coefficients is 3, both terms have an a so you can take that, and the first term has 2 b's and the second has one, so you can factor out 1 b from the terms so you get as a GCF 3ab. Factored from the actualy expression it would look like 3ab(8b+9)

OpenStudy (chriss):

I'll check the rest. Any I see that same problem with, I'll just give you the number to redo, if I see other issues I'll point them out along with the number.

OpenStudy (anonymous):

ohhh, okay! Thanks! and just to clarify, 1. is B then right?

OpenStudy (chriss):

yes

OpenStudy (anonymous):

okay! :)

OpenStudy (chriss):

Ok holdup a second. I need to make sure I am reading the problems correctly. In the first problem, is the problem \[6a4b^{2}+9a3b\] or \[6a^{4}b^{2}+9a^{3}b\] or even some other variation of coefficients and exponents? The reason I ask is because on the second problem I realized that if I read the 2 as a coefficient the way I did with the numbers in the first problem, then none of the answers work, but if it's an exponent then your answer is correct.

OpenStudy (anonymous):

its the second one you put, 6a^4b^2 + 9a^3b

OpenStudy (anonymous):

what problem are we doing?

OpenStudy (anonymous):

its the link above.... this one: http://answers.yahoo.com/question/index?qid=20120311111200AAtODgL But I just need it to be checked... there's a lot of questions but, all my answers are there.

OpenStudy (chriss):

Then your answer is correct. Sorry, the notation is a bit confusing.

OpenStudy (anonymous):

its, okay! :) I thought so after a little bit, I kept doing it over and over thinking I was doing something completely wrong, lol :)

OpenStudy (anonymous):

But its all good! :D

OpenStudy (anonymous):

#5 is right

OpenStudy (chriss):

2 is correct as well if that 2 is an exponent

OpenStudy (anonymous):

#6 is right

OpenStudy (anonymous):

yeah, sorry I didn't emphasis the exponents...

OpenStudy (anonymous):

#7 is right

OpenStudy (chriss):

3 is right

OpenStudy (anonymous):

emphasize*

OpenStudy (anonymous):

#8 and #9 are right

OpenStudy (anonymous):

:D

OpenStudy (chriss):

4 is right

OpenStudy (anonymous):

#10 is right

OpenStudy (anonymous):

yay! so far so good! :D

OpenStudy (chriss):

11 is right

OpenStudy (anonymous):

one more...

OpenStudy (anonymous):

Plus that last one with two parts....

OpenStudy (anonymous):

#12 is right

OpenStudy (anonymous):

:D yay, all of the multiple choice ones I got right, I'm so proud! lol :D

OpenStudy (chriss):

The answers for 13 look good too.

OpenStudy (anonymous):

Awesome! Thanks so much for your help you guys!! I really appreciate you checking ALL of those answers! I didn't think anyone would because there were so many! But thanks again! :D

OpenStudy (chriss):

you're welcome

OpenStudy (anonymous):

:D

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