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

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

Question 713859: The mass of a grain of a certain type of rice is about 10^-2 gram. about how many grains of rice are in a box containing 10^3 grams of rice?
A.) 10^-5
B.) 10^2
C.) 10^3
D.) 10^5

Click here to see answer by mananth(16946)

Question 715785: How to solve ((18x^5)/(y^3))^(-1/2)
Click here to see answer by MathLover1(20850)

Question 716329: This is the question I'm struggling to solve. 7/12X - 1/4 = 5
Below is my attempt to solve. It doesn't look correct.
12 would be my common denominator
7/12X - 3/12X = 5
4/12X = 5
1/3X =5
Click here to see answer by solver91311(24713)

Question 718155: How do I sikplify (2y) with a -5 exponent? I got -32 but I am not sure if it stays negative or goes to positive?
Click here to see answer by stanbon(75887)

Question 720489: How to evaluate (1/3)^3
Click here to see answer by ramsinaaa(9)

Question 721034: divide and simplify & write in exponential notation with positive exponents:
-36p^-17q^11/-15p^11q^-16
Click here to see answer by MathLover1(20850)

Question 721034: divide and simplify & write in exponential notation with positive exponents:
-36p^-17q^11/-15p^11q^-16
Click here to see answer by lynnlo(4176)

Question 721215: Please help me what is?
x^-6y^3 divided by -27x^9y^-3/4
Click here to see answer by jsmallt9(3758)

Question 721374: I am having trouble solving the equation: 9/b-8/b=1/4. Can you help?
Click here to see answer by Alan3354(69443)

Question 722808: how do you solve a negative exponent if the one the the exponent is a negative number and the next part is just zero. for example: m^-8p^0
Click here to see answer by jsmallt9(3758)

Question 723698: xto the 1/2 minus7xto the 1/4 plus 10

Click here to see answer by lynnlo(4176)

Question 724112: It's (3b over 4) minus (1 over 5) = (b over 2) i wanna solve and make b the subject.
Click here to see answer by jsmallt9(3758)

Question 724815: How do I solve this problem? I'm trying to help my daughter and I'm lost.
2a to the -5 power over b to the -6 power.
She is trying to simplify this problem.
Click here to see answer by KMST(5328)

Question 725217: 5\2x-3-1\x plus 5
Click here to see answer by stanbon(75887)

Question 725301: Simplify: (3x + 4y) - (2x - 5y)
Click here to see answer by checkley79(3341)

Question 726524: 3(x-3)=3
7
3 over 7
Click here to see answer by lynnlo(4176)

Question 727745: Please help me solve this equation: a^2 over b^2 divided by a over b^3
Click here to see answer by stanbon(75887)

Question 729748: there are 2. got them wrong on a test and cant come up with the teachers answer
1) solve for X: a/bx-c=0 . I get x=cb/a
2) subtract: 3x+1/x2(squared)-9 minus 2x-2/x2(squared -9. my answer x-1/x2(squared -9
Click here to see answer by Alan3354(69443)

Question 730794: what is equal to (6^-7)^3?
A. (1/6)^21
B. (-1/6)^-21
C. (1/6)^-21
D. (-1/6)^21
Click here to see answer by lynnlo(4176)

Question 731208: What is 4 divided c times c to the negative fifth power..
Click here to see answer by MathLover1(20850)

Question 732491: evaluete 25^3/2
Click here to see answer by lynnlo(4176)

Question 734233: x^-2 multiplied by x^-3
Click here to see answer by MathLover1(20850)

Question 734313: 1 1/6 + x/8 = 7/24 Not sure what to do once I turn the mixed fraction to an improper one. any help would be appreciated. thanks.
Click here to see answer by rfer(16322)

Question 734322: How to begin in a problem like this, 4x+3/15 - 2x-3/9 = 6x+4/6 - x . Thank you for any help!
Click here to see answer by stanbon(75887)

Question 737305: (-4p2 � 3p � 2) + (-p2 � 4)

Click here to see answer by stanbon(75887)

Question 737306: (12x^2 - 6x + 3)/3
Click here to see answer by stanbon(75887)

Question 737308: Use special product formula: (7a + 2)2
Click here to see answer by MathLover1(20850)

Question 737304: (7x � 0.6) � (-2x2 + 4x � 8)
Click here to see answer by rfer(16322)

Question 737694: 1.) 3x+12=15/x
2.) 3/x-3=5/x^2-9-2/x+3
Click here to see answer by josgarithmetic(39621)

Question 737996: (2/3)^4
I have to write it in simplest form, so I simplified it to- 2^4/3^4, but do I need to simplify it so it doesn't have the exponents in it anymore?
Click here to see answer by lynnlo(4176)

Question 738378: A-(9b-13b)=
A=12, b=-2

Click here to see answer by jim_thompson5910(35256)

Question 738378: A-(9b-13b)=
A=12, b=-2

Click here to see answer by rfer(16322)

Question 738395: Write answer in scientific notation:
(4.1*10^2)(3*10^-5)
I did: (4.1*3)*(10^2*10^5)=(4.1*3)*10^7=12.3x10^7 as my answer
Here is where I am confused, since the number is greater than 10 should it still be written in scientific notation? Is my answer correct? Thanks
Click here to see answer by checkley79(3341)

Question 738449: Write answer in scientific notation:
(4.1*10^2)(3*10^-5)
I did: (4.1*3)*(10^2*10^5)=(4.1*3)*10^7=12.3x10^7 as my answer
Here is where I am confused, since the number is greater than 10 should it still be written in scientific notation? Is my answer correct? Thanks
I then reworked the problem as 0.0123 or 1.23x10^-2, a previous answerer said the exp was ^2, which is correct?

Click here to see answer by Hchu243(2)

Question 739693: simplify 3x^2+6x/3x^2+9x
Click here to see answer by josh's girl(7)

Question 739696: simplify
Click here to see answer by josgarithmetic(39621)

Question 739694: simplify 15a+9ab/6a
Click here to see answer by checkley79(3341)

Question 739691: simplify 12x/3x+9
Click here to see answer by checkley79(3341)

Question 739690: 18x^3y^2/30x^4y^5 simplify
Click here to see answer by checkley79(3341)

Question 740051: factor 12s^3-21s^2+12s
Click here to see answer by MathLover1(20850)

Question 743762: 1-2ab-(a�+b�)
Click here to see answer by Ed Parker(21)

Question 745273: I don't understand how to solve:
10x^3 +y^2�2 -x^3�3 +y^2�4 -2x^2�3
I would really appreciate if you could show me the steps to solving this equation by tonight.
The given answer that was provided to me was 30�3x^3 -x^3�3
Thank you.
Click here to see answer by rothauserc(4718)

Question 745461: Please help me solve this equation:
a^-11 / a^-8
That is: a to the power of negative 11 divide by a to the power of negative 8.
Thank you.
Click here to see answer by stanbon(75887)

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