Questions on Algebra: Negative and Fractional exponents answered by real tutors!

Tutors Answer Your Questions about Exponents-negative-and-fractional (FREE)

Question 185675: -10a^5b/5ab^4

Click here to see answer by swiemers(10)

Question 186091: (a^-2b^5)^-8 Use poitive exponents only. Whatever that means.
Click here to see answer by vleith(2983)

Question 186704: I'm not too sure if this is the right section. But here goes.
Simplify the following:
(n^5/m^2)^3 x (m^4/n^2)^4
Click here to see answer by uday1435(57)

Question 187040: how do you solve (64)-2/3 that is the number 64 with a negative 2/3 as an exponent
Click here to see answer by vleith(2983)

Question 187040: how do you solve (64)-2/3 that is the number 64 with a negative 2/3 as an exponent
Click here to see answer by jim_thompson5910(35256)

Question 187188: Simplify each of these, expressing your answers with postive indices:
a. (x^-4y^7/x^-2y^-5) / (x^3y^-6/x^-1y)
b. 5(a^-4)^3b^-6/(a^2b^-1)^4 x 2a^7(b^-3)^2/a^-4b^-9
Coud you please show all working out because we've only started working on these, and I'm finding them really hard.
Thanks in advance.
Click here to see answer by vleith(2983)

Question 187314: (144)^-1/2 / (27)^-1/3
Click here to see answer by stanbon(75887)

Question 187424: 2r^-5 y^3 over n^2 divided by r^2 y^5 over 2n

I have no clue where to start with this. Thank you for your help

Click here to see answer by stanbon(75887)

Question 187452: I need help with this problem.
Simplify each expression.
2^7
over
2^5
Click here to see answer by user_dude2008(1862)

Question 187451: 5^2 5^3
over
5^3 5^2
=
5^_
Click here to see answer by user_dude2008(1862)

Question 187553: There is 3 part to my question -
1st - the product of the frequency (f) & the wavelength (w) of light in air is a constant (v). I'm to write an equation for this relationship.
2nd - solve equation for w. Then write this equation as an equation with (f) raised to negative exponent.
3rd - units of frequency are hertz (Hz). One hertz is one cycle per second, which is often as 1/s. Rewrite this expression using a negative exponent.
Thanks for any help you can give. I think for the first part it would be (f)(w)=V.
Click here to see answer by Alan3354(69443)

Question 187783: i need to find out how to simplify the expression (3x)^-2/(4x^2)^-2
Click here to see answer by jim_thompson5910(35256)

Question 188037: please help me solve this (1/4)^(5/2)
Click here to see answer by Earlsdon(6294)

Question 188132: SOLVE BY FACTORING CHECK BOTH ROOTS

x = 10/X-3
Click here to see answer by ankor@dixie-net.com(22740)

Question 188162: Evaluate: if a= -3 and b= -2
I'm not sure how to do this correctly, so it would be great if you could explain it.
Thank you ^_^
Click here to see answer by Alan3354(69443)

Question 188162: Evaluate: if a= -3 and b= -2
I'm not sure how to do this correctly, so it would be great if you could explain it.
Thank you ^_^
Click here to see answer by vleith(2983)

Question 188522: (-13q^-7w^5)^-2
Click here to see answer by stanbon(75887)

Question 188525: Simplify expression showing work
(25y^2)^1/2 (fraction 1/2)
Click here to see answer by jim_thompson5910(35256)

Question 188525: Simplify expression showing work
(25y^2)^1/2 (fraction 1/2)
Click here to see answer by stanbon(75887)

Question 188617: Simplify:
Im not sure how to solve this, please help.
Thank you
Click here to see answer by Mathtut(3670)

Question 188711: Please help me solve this equation:
Thank you!
Click here to see answer by jim_thompson5910(35256)

Question 188777: Can you please help me solve this:
Rewrite using only positive exponents:

Click here to see answer by Alan3354(69443)

Question 188774: can you please help me solve this problem?!

Given the equation , if you were to increase the base to 5, what would it do to the shape of the graph?
a.The graph would show a decreasing trend rather than an increasing trend
b.The graph would appear wider, away from the y-axis sooner, showing a slower increasing trend
c.The graph would appear skinnier, closer to the y-axis, showing a quicker increasing trend.

Click here to see answer by josmiceli(19441)

Question 188787: can you please help me solve this problem?!

In a large city league, the boys' baseball teams hold a tournament. If there are 40 teams in the league and half of the teams are eliminated in each round of games, how many teams are left after 3 rounds?
a.
b.
c.

Click here to see answer by jim_thompson5910(35256)

Question 188785: can you please help me solve:
Multiply the expression (3+x)(x-4)(x)to find its most simple form
Click here to see answer by jim_thompson5910(35256)

Question 188984: how do i solve(5xE3yE4)E2
Click here to see answer by jim_thompson5910(35256)

Question 189202: I would like step by step solving instructions and the answer, step by step, to this problem. The ^2 is supposed to be over the entire problem.

Click here to see answer by josmiceli(19441)

Question 189483: I need help on this problem, i don't know where to start but i know if i get a start on it i will be able to solve it.
3/7+x - 5/x = 4/7x
This problem is not from a book it's on a worksheet
Click here to see answer by greta_elisif(10)

Question 189879: What is -64 raised to the 2/3?
Click here to see answer by jim_thompson5910(35256)

Question 189879: What is -64 raised to the 2/3?
Click here to see answer by solver91311(24713)

Question 190274: Factor 15 + 3y � 5x^2 � x^2y
Click here to see answer by jim_thompson5910(35256)

Question 190438: write each number in scientific notation
A. 31,540,000,000
B. -0.00000502
Thanks
Click here to see answer by sabrinawayjack(8)

Question 190435: 24x5.2x2 The 5 is above and to the right of the X and so is the 2
Please help
Thanks
Click here to see answer by checkley75(3666)

Question 190809: what is L/1-L=1/L= golden ratio
Click here to see answer by solver91311(24713)

Question 191217: how do you solve for x in this equation .6/256x^5=1.1*10^13 I know that x should equal 7.3*10^-4, but i do not know how to get that. Does anyone know the steps to solve this?
Click here to see answer by stanbon(75887)

Question 191254: My problem is with entering e raised to a negative power on my TI-84 Plus calculator. I know what answer I need to get and I can't figure out how to enter the problem correctly. I've looked on line and through my calculator manual to no avail!
The problem is: If 18 g of a radioactive substance are present initially and 3 yr later only 6 g remain, how much of the substance will be present after 11 yrs?
I get to the equation y=18e ^-.2310 x 7 and I know my answer is 5.02 grams, but how do I do this on my calc to get this answer? Thanks for any help!
Click here to see answer by Edwin McCravy(20060)

Question 192329: I do not know if this is the right section or not, but please help me solve this equation: 6r/12 = -1/14
Click here to see answer by checkley75(3666)

Question 192559: Write with positive exponents
2-^2a^-3b^-2c
-------------
ab^-2c^-3
Click here to see answer by vleith(2983)

Question 192559: Write with positive exponents
2-^2a^-3b^-2c
-------------
ab^-2c^-3
Click here to see answer by Mathtut(3670)

Question 192921: Convert to scientific notation (here you may use the x as multiplication): 0.000347
Click here to see answer by RAY100(1637)

Question 192920: 1. Simplify and evaluate:
Simplify and evaluate:
(x3 y-4/5x6 y-8 z0)3
x cubed y -4 / 5x to 6th power y -8 power. I can't seem to show exponents correctly.
Click here to see answer by RAY100(1637)

Question 192931:
For f(x) = 2x - 11, find f(2)

Click here to see answer by checkley77(12844)

Question 192940: Simplify and evaluate:
(x3 y-4/5x6 y-8 z0)3

Click here to see answer by stanbon(75887)

Question 193179: what is 10 to the power of negative four?
Click here to see answer by Mathtut(3670)

Question 193267: Evaluate 2^-2 x 2^4 x 2-^3
Click here to see answer by jim_thompson5910(35256)

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