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

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

Question 665735: 4*-4*-1=24

Click here to see answer by Alan3354(69443)

Question 666262: (-3x^-2)^-3
Click here to see answer by MathLover1(20850)

Question 666262: (-3x^-2)^-3
Click here to see answer by Alan3354(69443)

Question 666290: helow my name is annastashia and i having a problem with alegbra abd i was wondereing to see if u can help me my problem has to do with solving one- step equations and the quisten is 1/3v is neg 5
Click here to see answer by lynnlo(4176)

Question 667231: 5\4x + 1\2= 2x-1\2
Click here to see answer by ewatrrr(24785)

Question 668060: What percent of 75 is 27
Click here to see answer by Adrianne15(25)

Question 668060: What percent of 75 is 27
Click here to see answer by ReadingBoosters(3246)

Question 668057: What percent of 75 is 27
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Question 668057: What percent of 75 is 27
Click here to see answer by MathLover1(20850)

Question 668496: I nedd help with a math problem 5-12
5 10
Click here to see answer by ReadingBoosters(3246)

Question 668655: SOLVE THE EQUATION AND CHECK THE ANSWER
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Question 668667: use the formula d=rt to find value of the missing variable
d=80 feet t= 20 seconds
r=?ft/seconds
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Question 668679: Please help me solve this equation: 5-1/2(b-6)=4
and the answer is b=8
Click here to see answer by ReadingBoosters(3246)

Question 668679: Please help me solve this equation: 5-1/2(b-6)=4
and the answer is b=8
Click here to see answer by MathLover1(20850)

Question 670325: how do you solve the following equation in the simplest form? 3x/20 - [-4x/5] - x/4? I solved it as follows: 3x/20 + [16x/20] - 5x/20= 14x/20=7x/10.

Click here to see answer by Alan3354(69443)

Question 670399: how do i solve a math equation with negative numbers and variables in the fraction? Ex: 12/x-3=4
Click here to see answer by ReadingBoosters(3246)

Question 672312: I need help on a fraction properties of exponents question.
I am unsure if the answer is suppose to be negative or positive.
w^12
----
w^18

= w^6 or w^-6
Click here to see answer by Alan3354(69443)

Question 672713: simplify 7x^-2 using positive exponents

Click here to see answer by jim_thompson5910(35256)

Question 672911: Write this expression with a positive exponent and then simplify(2r)^-8
Click here to see answer by MathLover1(20850)

Question 672949: Simplify. M/2-3n/5
Click here to see answer by ReadingBoosters(3246)

Question 671524: -3(x+5)=8x+18
Click here to see answer by ReadingBoosters(3246)

Question 671518: -3(x+5)=8x+18
Click here to see answer by ReadingBoosters(3246)

Question 673763: simplify the following without negative exponents (3x^2y^-2) (z^3)^3
Click here to see answer by lynnlo(4176)

Question 675466: (25x^3 y^2/ x^2 y^-2)^(-1/2)

Click here to see answer by lynnlo(4176)

Question 676916: What is 9.9 x 10 ^-8?
^-8 means: negative 8 exponent
Click here to see answer by littlebitlove(26)

Question 676942: What is 9.9 x 10 ^-8?
^-8 means: negative 8 exponent
The teacher wants the answer in the form of a fraction?
Click here to see answer by MathLover1(20850)

Question 677206: Can someone check my work please? I feel like I'm missing steps. I'm not sure if I'm on the right track with this one. Thank you!
[3y^(2/3)]^(-3)
(3y(2/3))^-3 =
(6y/3)^-3 =
(2y)^-3 = 2^-3y^-3 = 1/(2^3y^3)=1/8y^3
Click here to see answer by Alan3354(69443)

Question 677384: how do you factor x^9-y^15? show steps please

Click here to see answer by jim_thompson5910(35256)

Question 677384: how do you factor x^9-y^15? show steps please

Click here to see answer by stanbon(75887)

Question 677757: The first 10 Fibonacci numbers are 1, 1, 2, 3, 5, 8, 13, 21, 34, 55. If the ith Fibonacci number is denoted �i, calculate:
5
SIGMA SIGN f2j
j=3

I appologize, the sigma sign cannot be cut and pasted...

Click here to see answer by jim_thompson5910(35256)

Question 677750: I appologize in advance for the way this problem is typed, the square root sign cannot be cut & pasted.
solve:

zx^-4 (sqrt)X (yz^4)^3
/ DIVIDED BY

Z^7xy

I came up with a horrible answer, 2916. My math work must have gone wrong some where?
Click here to see answer by MathLover1(20850)

Question 678357: y^-2 + y^-1 = 20
Click here to see answer by stanbon(75887)

Question 678357: y^-2 + y^-1 = 20
Click here to see answer by Alan3354(69443)

Question 678764: (27x^9y^6)^-2/3
Click here to see answer by ReadingBoosters(3246)

Question 680287: Can you please evaluate this expression? (1/17)-1/4. The -1/4 is the negative exponent with (1/17) as the base.
Click here to see answer by ReadingBoosters(3246)

Question 680342: This is the closest algebra choice I could find for my question. The question I need help with is 1/x to the power of -7.
Click here to see answer by ReadingBoosters(3246)

Question 680347: Hi I need help with currently two more questions.
23) 5x to the power negative 4
24) 1/c to the power of neg. 1
Click here to see answer by ReadingBoosters(3246)

Question 682018: Use a power with a negative exponent to write an equivalent form for -3.
Please show any work possible.
Click here to see answer by stanbon(75887)

Question 682500: Rational exponents: Negative exponents and fractional bases
What is the answer without exponents?
(1/8)2/3=?
125 -2/3=??

Click here to see answer by rapaljer(4671)

Question 685460: 5 3/4 = d - 2 1/8
3/4 = .75
5.75
8/1 = .125
2.125
-5.75- 2.125 = -3.625
but dont know where to go from there
Click here to see answer by Alan3354(69443)

Question 686266: -32 ^ (-6/5): To make the exponent positive, we write expression in the denominator, getting 1/-32^6/5. Then, the fifth root of -32 is -2, and -2 raised to the sixth power equals positive 64. So the answer seems to be 1/64. Yet the answer provided is -(1/64). Why? Thank you very much for your help.
Click here to see answer by nerdybill(7384)

Question 688002: I have a fraction with the answer in the back of my book but I can't figure out how they got the answer. The fraction is Y negative 3rd power divided by (Y to the 4th power)to the 2nd power
Click here to see answer by stanbon(75887)

Question 688858: I am working on a math page. It says: Lorenzo needed to find 1/9 of 27. His friend Carla told him to write 1/9 as 3 to the -2 and 27 as 3 to the 3 to get 3 to the negative 6. Was Carla correct? Explain.
I think she's correct, but I'm not quite sure on how to explain it.
Click here to see answer by Alan3354(69443)

Question 688881: book answer.....
5(3a-8)= 15a
how? i got.....
5(5a) = 25a
Click here to see answer by jim_thompson5910(35256)

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