Tutors Answer Your Questions about Exponents-negative-and-fractional (FREE)
Question 26718: When the equation y=200*g^x models exponential growth, g can be
A) Any whole numer
B) any real number greater than 1
C) any real number
D) any real number between 0 and 1.
I think it may be D but I need some direction?
Thank you again for your help! Its greatly appreciated!!!!!
Jamie
Click here to see answer by longjonsilver(2297)   |
Question 26787: The pattern (x2)^5=x^10 is true for...
1)x=2 only
2) x=-1 only
3) x=1 and x=0 only
4) all real numbers
I feel that 2 is correct because I added the 1 and the 0 in the place of the x but I am not sure because it seems they both would equal themselves? Iam I going in the right direction here?
Thank Q!
Click here to see answer by AdolphousC(70) |
Question 26828: A duplicating machine enlarges a picture by 30%. If that enlarger is used 2 times, about how many times as large as the original picture will the final picture be?
1) 1.7
2) 0.6
3) 2.6
4) 3
I wanted to say 0.6? but can you explain the answer for me? Again thank you for your help!
Click here to see answer by bmauger(101) |
Question 27137: Here is the problem:
(5/4)to the negative 3rd power (5/4) to the negative 2nd power (5/4)to the 2nd power
I always thought that to get rid of a negative power, you invert. For example the first one would be (4/5) to the 3rd power, the second one would be (4/5) to the 2nd power....but what do I do with the 3rd part? It is not a negative exponent. Then you would add/subtract the exponents and the base would remain (4/5). Please help if you understand my question.
Thanks,
Patty
Click here to see answer by askmemath(368) |
Question 27653: I've tried to work this out but can't figure out where I'm going wrong...
(-2)^2-(-2)^-3(3)
I get
4 + 1/8 times 3 or 99/8 but the answer is suppose to be 35/8. ??????
Thank you for any assistance.
Rebecca
Click here to see answer by askmemath(368) |
Question 25825: Please help me with this problem. I know that in order to obtain a positive exponent, use the reciprocal. Thank you.
Simplify. Write answer without negative exponents.
a^(-4/5)w^2/3 divided by (a^2)*w^(5/3)
Click here to see answer by bmauger(101) |
Question 27989: I cant seem to get the answer for the following problem. My mother cant get it neither. Here is the problem: (2^-1*tu^-1)^3*(6tu^-1)^-2 . The section says to express each problem in simplest form, without using negative or zero exponents. Thanks, Luke
Click here to see answer by venugopalramana(3286) |
Question 28384: hi,my name is tabi and i'm having ALOT of trouble with algebra and i'm not quite sure what to do...can you please help me with this problem....
3x+4 over 2x + x-6....?the answer is 11 over 6....my first big question is why is the denominator 6 and not 12?...and can u explain to me how to do this problem,please?
thanks in advance,
Tabi
Click here to see answer by ashleygurl92(6) |
Question 28887: I am trying to re-write the following expression using negative exponents:
x^2/y^2
The book gives the answer as:
y^-2/x^-2
How did they get this? All of the example problems about writing equivalent expressions using negative exponents have been limited to single literals, often with the answer containing a 1 in the numerator.
Click here to see answer by sdmmadam@yahoo.com(530) |
Question 28887: I am trying to re-write the following expression using negative exponents:
x^2/y^2
The book gives the answer as:
y^-2/x^-2
How did they get this? All of the example problems about writing equivalent expressions using negative exponents have been limited to single literals, often with the answer containing a 1 in the numerator.
Click here to see answer by longjonsilver(2297) |
Question 31252: I need help with the following. Need to expand to have the answer have only positive exponents. I understand that x^-2 becomes 1/x^2. But get confused when the negative exponent is in the numerator of a fraction.
x^-2/y(xz/y - 1/y^-4)
Thank you.
Rebecca
Click here to see answer by troyapplehelen(46) |
Question 31250: I need help with the following. Need to expand to have the answer have only positive exponents. I understand that x^-2 becomes 1/x^2. But get confused when the negative exponent is in the numerator of a fraction.
x^-2/y(xz/y - 1/y^-4)
Thank you.
Rebecca
Click here to see answer by longjonsilver(2297) |
Question 31491: (a^1/5 * c^-3/5)^2
A with a one fifth power multiplied with C with a negative three fifth power wich is closed in parenthesis and then squared.
This equation is asked to be simplified without using negative exponents and to assumed that all variables are poitive real numbers.
Click here to see answer by Cintchr(481) |
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