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

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 Algebra: Negative and Fractional exponents Solvers Lessons Answers archive Quiz In Depth

 Question 129437: Hi can you explain the formula for : 7 - X = 8 Thanks Click here to see answer by stanbon(57377)

 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(8403)

 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(28595)

 Question 135403: how do i simplify this problem? y^3/5( y^1/2-y^-1/2) thanks J Click here to see answer by stanbon(57377)

 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(12569)

 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(12569)

 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(12569)

 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(57377)

 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(15657)

 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(57377)

 Question 138979: 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=) Click here to see answer by solver91311(16897)

 Question 138978: 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=) Click here to see answer by solver91311(16897)

 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(57377)
 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 ankor@dixie-net.com(15657)

 Question 141182: Ok I need help on this one please... Page 279 Number 2 5x(-3x^4 + 4x) I have to multiply this one... Click here to see answer by Earlsdon(6287)

 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(57377)

 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(57377)

 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(15657)

 Question 142758: solve 5 1/2x - 7 1/3 = 9 1/2 Click here to see answer by stanbon(57377)

 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(12569)

 Question 143125: what meathod do i use b/c i dont get it. (-5a^2)(-2ab^4) Click here to see answer by checkley77(12569)

 Question 143124: What method do i use because i dont understand this. (6st)(-2s^2t) Click here to see answer by checkley77(12569)

 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(12569)