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

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

Question 222045: I need to sove for n and can't seem to get the same answer as the book.
9-2n/7=19
Click here to see answer by Alan3354(69443)

Question 222836: I am writing a scientific notation problem the 34,500,000,000 and 72,500,000,000 my answer is 34.5x10^10 and 72.5x10^10 am I on the right track?
Click here to see answer by Alan3354(69443)

Question 223134: Write answer without exponents
(1/32)^2/5
64^-2/3

Click here to see answer by RAY100(1637)

Question 223142: Suppose that the credit remaining on a phone card (in dollars) is a linear function of the total calling time (in minutes). When graphed, the function gives a line with a slope of -0.16
There is $29.00 in credit remaining on the card after 25 minutes of calls. How much credit was there after 18 minutes of calls?

Click here to see answer by stanbon(75887)

Question 223315: negitive 5 and one third divided by 8 =
Click here to see answer by checkley77(12844)

Question 223315: negitive 5 and one third divided by 8 =
Click here to see answer by rfer(16322)

Question 223315: negitive 5 and one third divided by 8 =
Click here to see answer by jsmallt9(3758)

Question 224040: At 9:00 A.M. the temperature was -7 degrees fahrenheit. By noon, the temperature was 19 degrees fahrenheit. What was the change in temperature?
I got either 12 degrees fahrenheit or 26 degrees fahrenheit. But I don't know which answer is correct. Do I do -7 + 19 or just 19 plus 7 because its the total change?
Click here to see answer by Alan3354(69443)

Question 224432: negative 16 and one third divided by (negative 2 and one third)
Click here to see answer by Alan3354(69443)

Question 224430: negative 4 over 3 divided by (-8)
Click here to see answer by stanbon(75887)

Question 224518: 1 and five sevenths minus 3 and one seventh
Click here to see answer by checkley77(12844)

Question 224567: (3x/(1/x-5))-1exponent
what is the answer for 3x over 1/x-5 multiplied to the -1 power ,
how do you solve.
Click here to see answer by Earlsdon(6294)

Question 224856: If the negative sign is outside of the absolute value what do I do to solve the problem. -|x|>8
Click here to see answer by checkley77(12844)

Question 224856: If the negative sign is outside of the absolute value what do I do to solve the problem. -|x|>8
Click here to see answer by MathTherapy(10555)

Question 225259: ^4
Click here to see answer by ankor@dixie-net.com(22740)

Question 225407: what is 1 over 3, 4, 4 32 over 181
Click here to see answer by solver91311(24713)

Question 225469: You are picking up your friend and going to a concert. Your friend lives three miles west of your house and the concert is 21 miles east of your friends house. When you are at the concert how far away from home are you?
Click here to see answer by checkley77(12844)

Question 225860: Solve:
Click here to see answer by drj(1380)

Question 225857: If a certain number is addedto the numerator and denminator of 7/15, the result is 1/3, find the number?
Click here to see answer by ankor@dixie-net.com(22740)

Question 226431: what is the answer to 8 to the negative 2/3 power?
Click here to see answer by jim_thompson5910(35256)

Question 226686: what is 2/3 to the 4th power please
Click here to see answer by drj(1380)

Question 226811: how do you solve 5.31*10^-26
Click here to see answer by Alan3354(69443)

Question 227149: Factor the expression into a product of two binomials.
s(s - 10) + 5(s - 10)
Click here to see answer by ankor@dixie-net.com(22740)

Question 227151: Factor completely. If the polynomial is prime, state this.
5p4q4 - 180
Click here to see answer by user_dude2008(1862)

Question 227949: How do I solve (xy)(-xy)?
Click here to see answer by jim_thompson5910(35256)

Question 228585: Please help.
3z^2-4=-112
and
u^2-3u-10=0
I got 5, -2 for this one.
Click here to see answer by rapaljer(4671)

Question 228548: (w^-4)^2
Click here to see answer by JenniferTutors(83)

Question 228580: What is the sketch of y = (-2)^x on a number plane?
My graphics calculators are showing different solutions or no solutions. -.-
Click here to see answer by Alan3354(69443)

Question 229270: please explain in detail how this problem is figured out I am a visual learner so I'm lost on the step by step process (c^4/d^3)^-4 I understand it became c^-16/d^-12 but why and how did the solution become d^12/c^16
Click here to see answer by Alan3354(69443)

Question 229584: Trying to figure out this problem: f(x)=6434x to the -4/3 power. x=18
I try 1/18 x 4/3 and get 13.5. That times 6434 = 86859, which is NOT the correct answer! Please help! Thank you very much!!!! Steve
Click here to see answer by ankor@dixie-net.com(22740)

Question 229962: (x ^ 3 / y ^ 3 z ^ 5) ^ 2
The answer I got is:
x ^ 6 / y ^ 6 z ^ 10
Is this correct?
Click here to see answer by edjones(8007)

Question 230370: 2 5/8 x 4/7 x 12
Click here to see answer by rfer(16322)

Question 230388: -3.6 + x over 3 = 3.2

Click here to see answer by rfer(16322)

Question 230604: 3^(-2)x^(2)y^(-6)
-----------------
7^(-2) x^(10)y^(-1)
Click here to see answer by user_dude2008(1862)

Question 229967: 3 X (4 - 1) ^ 3 + 9 / 3 + (6 - 4) ^ 2
The answer I got is:
34
Is this correct?
Click here to see answer by rfer(16322)

Question 230677: what would be derivative for AC= 100Q to the negative 1 exponent + 2 + .5X
My question is how to treat the 100Q to the negative 1 exponent
Click here to see answer by rfer(16322)

Question 230791: If f(x) = 2x-4, find f^-1(x)
Click here to see answer by stanbon(75887)

Question 230821: Well my teacher gave us this homework, and he didn't really explain it well. I'm supposed to simplify, and I can't use negative or fractional exponents in the answer. Here's an example: I have no idea how to do this. Please Help!
Click here to see answer by Alan3354(69443)

Question 230982: (-2/3)/(-4/9)
9-(-2)+(3-4)
Click here to see answer by rfer(16322)

Question 231064: X^2+4X=9

Click here to see answer by troymuga(3)

Question 231223: I think the answer is 3/4, but I'm not sure...I would appreciate the help very much. Thank you.
8/15=x+2/5
Click here to see answer by stanbon(75887)

Question 231515: I tried to use the calculator, but still can't come up with an answer. It is a multiple choice.
Q: In(1/3.14159)
A).4971
B)1.147
C)-1.1447
D)-0.4971
I am lost..I have other problems to do, please show me how you do this so I can do the rest of my work..Thank you
Click here to see answer by Alan3354(69443)

Question 231101: Trying to solve this equation for x: 9x^(2/3)-4x^(-4/3)=0
Step by step instructions would be great as I don't understand how to get rid of the powers - I know the answer is +/- 2/3
Thank you
Click here to see answer by ankor@dixie-net.com(22740)

Question 231656: simplify (256) 3/4 but the 3/4 is an exponet
Click here to see answer by rfer(16322)

Question 231719: how can we simplify this:
2L*C/(c^2 - v^2) = ?
Click here to see answer by solver91311(24713)

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