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

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Algebra: Negative and Fractional exponents

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Question 131610This question is from textbook concepts and skills

: Rewrite 3.94x10^ in decimal formThis question is from textbook concepts and skills

Click here to see answer by rapaljer(3622)

Question 131823: 1/y^9 X y^15
Click here to see answer by stanbon(26291)

Question 131823: 1/y^9 X y^15
Click here to see answer by TakeATuition.com(57)

Question 129437: Hi can you explain the formula for :
7 - X = 8
Thanks
Click here to see answer by stanbon(26291)

Question 132218: y=3x-4 solve for y
Click here to see answer by nycsharkman(136)

Question 132422: Use rational exponents to write x^1/7 * y^1/6 * z^1/4 as a single radical expression.
The exponents are fractions and so I'm thrown off. Please help.
Click here to see answer by edjones(3298)

Question 133325: I need to rewrite the expression with positive exponents.
1/2x^-2y^-3
Simplify the expression. The simplified expression should have no negative exponents.
(2x^3y^2/3xy)^-3
Please help!
Click here to see answer by vleith(1977)

Question 133550: 3\5 divide 3/4 =

Click here to see answer by edjones(3298)

Question 133553: 3/20 x __ = 15/100
fill in the blank for this math problem.
Click here to see answer by elima(1433)

Question 133636: (-5/x)*2 X (2x*4/y*3)*2
open parenthesis negative 5 over x close parenthesis quantity squared times open parenthesis 2x to the 4th power over y to the third power close parenthesis quantity squared
Click here to see answer by checkley71(8405)

Question 133733: Simplify

(h^-2 - m^-2)/(m^-1 - h^-1)
Click here to see answer by checkley71(8405)

Question 134012: how would you write an answer as a fraction in simplest form?
Click here to see answer by solver91311(5072)

Question 134220: Find the domain of the following function f(x)=the square root of the quantity 2x+5
Click here to see answer by jim_thompson5910(13794)

Question 134720: Solve for X:
X*L^-2=W
Thank you.
Click here to see answer by vleith(1977)

Question 135403This question is from textbook
: how do i simplify this problem? y^3/5( y^1/2-y^-1/2)
thanks
JThis question is from textbook

Click here to see answer by stanbon(26291)

Question 135650: Simplify and write answer with positive exponents. Assume all variables are positive and real numbers.
-25^-3/2
Click here to see answer by checkley77(7072)

Question 136246: 2
-3 =
Click here to see answer by solver91311(5072)

Question 136850: here is the problem:
divide as shown and simplify if possible.
t^8
-----
t^-11
(division)
i came up with t^-3 but it's not correct.
Click here to see answer by checkley77(7072)

Question 136977: adding & Subtracting fractions; mixed expression How would you do this problem? write in simplest form 3x-1/x
Click here to see answer by checkley77(7072)

Question 137183: how do you solve this -5^2 compared to(-5)^2
if there are no parenthesis around the number and the negetive, does the negetive sign get squared?
Click here to see answer by stanbon(26291)

Question 137364: (-87)(73/-12)-78
Click here to see answer by checkley77(7072)

Question 137828: How do you start to solve this problem with simplify the expression?
x to the negative 3/7 power times x to the positive 5/3 power, all over x to the 4/5 power?
Click here to see answer by ankor@dixie-net.com(6693)

Question 138882: How would you suggest I manipulate this example of fractional exponent to yield
positive/correct results?
i.e. :
X = a(b/c)^1/2
Click here to see answer by stanbon(26291)

Question 138974This question is from textbook algebra
: I have to solve equations with fractional coefficients.
x/5-x+2/3=1/5
I got x=46
Please help me, Thank You=)This question is from textbook algebra

Click here to see answer by stanbon(26291)

Question 138979This question is from textbook algebra
: It asks 10x^2-30x+20/x^2-1
I got it wrond, because I didn't factor correctly. I got x-30/x+1
Please and Thank You=)This question is from textbook algebra

Click here to see answer by solver91311(5072)

Question 138978This question is from textbook algebra
: This is an annoying problem, I did solve it, but I got it wrong.
It says some students simplify 2x^2-32/x-4 as 2x^2-32/x-4 where they crossed out 2x^2 and made it 2x and crossed out 32 and made it 8, crossed ut x-4=2x-8
It asks to choose values of x to show this is not true. Then simplify it correctly.
Please and Thank You=)This question is from textbook algebra

Click here to see answer by solver91311(5072)

Question 139203: I'm soooo confused, I'm in the 7th grade and my math teacher isn't explaining algebra in a way I understand. I understand and can figure out that 1/3(s+6)=3 and that 's' is -3 (I think) but what I don't get is 2/3(x18)=-6. I DON'T GET IT!!! What's the answer and how do I get it? Please help!My teacher tried to help with a diffrent problem, 2/3x=12 with 'x'being 18 she wrote out the way to solve it but it still dosn't make any sense to me
Click here to see answer by stanbon(26291)

Question 139295: x^2+5x+4 over 3x+12
Click here to see answer by edjones(3298)

Question 140736This question is from textbook

: 3.6*10^15This question is from textbook

Click here to see answer by checkley77(7072)

Question 141182This question is from textbook Beginning Algebra

: Ok I need help on this one please...
Page 279
Number 2
5x(-3x^4 + 4x) I have to multiply this one...This question is from textbook Beginning Algebra

Click here to see answer by Earlsdon(4900)

Question 129039: A computer can execute one addition in 1.4 x 10^-7 seconds. How long would it take the computer to execute a trillion (10^12) additions? Give the answer in seconds and then in hours.
I have tried to multiply 1.4 x 10^-7 x 10^12, but my teacher told me to do
(1 x 10^12)/(1.4 x 10^-7).
Click here to see answer by stanbon(26291)

Question 142035: 3r^3s^-5t over 2r^-3s^-5t4 I missed this on homework and need to correct. My answer was r^6 over t^4. Please help me solve and understand steps.
Click here to see answer by stanbon(26291)

Question 142031: (6m^0)(3^-1m^2n^-4) I got this incorrect on homework and need to correct it. I do not understand how to solve the equation. how do i solve this equation?
Click here to see answer by stanbon(26291)

Question 142079:
=
i dont know the answer. =[[
please help!
Click here to see answer by scott8148(3382)

Question 142077:
=
i dont know the answer. =[[
please help!
Click here to see answer by scott8148(3382)

Question 142081: (1.25x10^-5 )x( 3.50x10^-5)
Click here to see answer by josmiceli(3012)

Question 142511: I am unsure how to solve x^/y-^ when only using positive exponents
Click here to see answer by ankor@dixie-net.com(6693)

Question 142758: solve
5 1/2x - 7 1/3 = 9 1/2
Click here to see answer by stanbon(26291)

Question 143122: I think i need to multiply the exponents but im not entirely sure.
(3x^2y^3/4x^-2)^3
Click here to see answer by checkley77(7072)

Question 143125: what meathod do i use b/c i dont get it.
(-5a^2)(-2ab^4)
Click here to see answer by checkley77(7072)

Question 143124: What method do i use because i dont understand this.
(6st)(-2s^2t)
Click here to see answer by checkley77(7072)

Question 143121: I dont have any clue as to what i need to do for this problem.
(x^3*x^4/x^2)^6
Click here to see answer by checkley77(7072)

Question 144132: simplify or put in standard terms: (8/27)^-(1/3)
Click here to see answer by jim_thompson5910(13794)

Question 144240: 1-(1+xy^-2)^-2 divided by 1+(1+xy^-2)^-2
Directions are to simplify. Thanks
Click here to see answer by Edwin McCravy(2922)

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