# Math

I posted these 2 questions a couple of days ago and although the help I received would have been more appreciated if it didn't come with an underhanded comment, I did see where I made my mistake with the first question, however I would like to know with the second question, how the tutor came up with the answer w^4? What do we do with a positive exponent in the denominator when we bring the negative numerator down to the denominator?

Hello, I have two more rational exponent question that I wanted to verify please:

4x^3y^-2
_________
2x^-1y^4

= 2x^4y^6

is this correct?

2nd question:

[w^1 / w^-3]

= [w^(1)(-4)/ w ^ (-3)(-4)]
= w^-4 / w^12
= w^12 / w^4
= w^3 / w

Is this right?

Math - drwls, Thursday, November 18, 2010 at 2:41pm
Both are wrong. You seem to have no idea at all how to handle exponents.

2x^4 y^-6 and w^4.

1. 👍 0
2. 👎 0
3. 👁 166
1. 1.

4x^3y^-2 / 2x^-1y^4 = 2x^3x^1 / y^4y^2=
2x^4 / y^6.

2. W^1 / W^-3 = W^1W^3 = W^4.

RULES:

1. NEVER leave neg. exponents in your

2. When multiplying, always add the
exponents.

3. When dividing, subtract the expon.
in the denominator from the exponent in
the numerator and put the results in
the numerator. If the results is neg.,
move it to the denominator as a positive.

1. 👍 0
2. 👎 0
posted by Henry

## Similar Questions

1. ### English

I have posted two essays recently and have received no response, one was only a few hours ago but the other one was over 10 days ago....pls help with the one from two hours ago or let me know if you are unable to help. thanks

asked by c on September 25, 2014
2. ### Grammar

I'm still really confused with this one; I posted it up a couple of days ago but never got the answer Is this a dangling modifier? To the victor goes the privelage of writing history. -MC

asked by mysterychicken on May 12, 2009
3. ### To Emma

You've been banned from posting on Jiskha for a couple of days. Twice you posted questions with my name in the Name box. Do not try to impersonate anyone else on this forum.

asked by Ms. Sue on October 18, 2010
4. ### Site not working correctly/Physics

I posted a question a couple of days ago which was answered by DRWLS - thank you. Unfortunately I am unable to read the guidance provided as the typing is obscured by the adverts down the right hand side of the page. Look forward

asked by Mike on December 7, 2011
5. ### Socials

I had posted some of these questions a few days ago, but i had trouble finding the answers to these questions in the sites. Can you please answer them with giving sites. Thanks :) what are some fun things to do in guadeloupe(ex:

asked by Tess on May 6, 2013
6. ### To debbie: business math

You've posted at least 25 business math questions in the last couple of days, with no indication of your own efforts. In addition you ignored my request to respond to the requests we made to your early posts. As I told you

asked by Ms. Sue on October 30, 2010
7. ### IS THERE ANY CHEMISTRY TUTORS OUT TONIGHT

i posted a question around like 5 hours ago and still haven't received any help.

asked by john on March 13, 2008
8. ### Statistics (Probability)

I just asked a question a few minutes ago. But this is the last two questions I need help with. I have tried a couple different answers for both and still can't seem to get the correct ones. Four draws are going to be made at

asked by Lilly on June 2, 2018
9. ### chemistry

AgCl Ag^+ + Cl^- NaCl ==> Na^+ + Cl^- Ksp = (Ag^+)(Cl^-) = 1.8 x 10^-10 Let S = solubility of AgCl, then (Ag^+) = S (Cl^-) = S+0.01 Solve for S. Note: A similar problem to this post (0.1 M NaCl instead of 0.01 M NaCl) was on a

asked by Claus on April 3, 2008
10. ### To Troyer 0269

I deleted your last science post, as I promised I would a couple of weeks ago. You posted five questions that I'm sure you could answer by reading your text. As you know, we don't give answers, but help students with problems they

asked by Ms. Sue on December 14, 2008

More Similar Questions