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 185860: I don't understand this math and the book doesn't give a good explanation of how to solve the problem. 1/6t = 18 x+8/4= 6 Click here to see answer by checkley77(12569)

 Question 186091: (a^-2b^5)^-8 Use poitive exponents only. Whatever that means. Click here to see answer by vleith(2825)

 Question 186704: I'm not too sure if this is the right section. But here goes. Simplify the following: (n^5/m^2)^3 x (m^4/n^2)^4 Click here to see answer by uday1435(57)

 Question 187040: how do you solve (64)-2/3 that is the number 64 with a negative 2/3 as an exponent Click here to see answer by vleith(2825)
 Question 187040: how do you solve (64)-2/3 that is the number 64 with a negative 2/3 as an exponent Click here to see answer by jim_thompson5910(28696)

 Question 187188: Simplify each of these, expressing your answers with postive indices: a. (x^-4y^7/x^-2y^-5) / (x^3y^-6/x^-1y) b. 5(a^-4)^3b^-6/(a^2b^-1)^4 x 2a^7(b^-3)^2/a^-4b^-9 Coud you please show all working out because we've only started working on these, and I'm finding them really hard. Thanks in advance. Click here to see answer by vleith(2825)

 Question 187452: I need help with this problem. Simplify each expression. 2^7 over 2^5 Click here to see answer by user_dude2008(1861)

 Question 187553: There is 3 part to my question - 1st - the product of the frequency (f) & the wavelength (w) of light in air is a constant (v). I'm to write an equation for this relationship. 2nd - solve equation for w. Then write this equation as an equation with (f) raised to negative exponent. 3rd - units of frequency are hertz (Hz). One hertz is one cycle per second, which is often as 1/s. Rewrite this expression using a negative exponent. Thanks for any help you can give. I think for the first part it would be (f)(w)=V. Click here to see answer by Alan3354(31487)

 Question 187783: i need to find out how to simplify the expression (3x)^-2/(4x^2)^-2 Click here to see answer by jim_thompson5910(28696)

 Question 188132: SOLVE BY FACTORING CHECK BOTH ROOTS x = 10/X-3 Click here to see answer by ankor@dixie-net.com(15745)

 Question 188162: Evaluate: if a= -3 and b= -2 I'm not sure how to do this correctly, so it would be great if you could explain it. Thank you ^_^ Click here to see answer by Alan3354(31487)
 Question 188162: Evaluate: if a= -3 and b= -2 I'm not sure how to do this correctly, so it would be great if you could explain it. Thank you ^_^ Click here to see answer by vleith(2825)

 Question 188774: can you please help me solve this problem?! Given the equation , if you were to increase the base to 5, what would it do to the shape of the graph? a.The graph would show a decreasing trend rather than an increasing trend b.The graph would appear wider, away from the y-axis sooner, showing a slower increasing trend c.The graph would appear skinnier, closer to the y-axis, showing a quicker increasing trend. Click here to see answer by josmiceli(9817)

 Question 188787: can you please help me solve this problem?! In a large city league, the boys' baseball teams hold a tournament. If there are 40 teams in the league and half of the teams are eliminated in each round of games, how many teams are left after 3 rounds? a. b. c. Click here to see answer by jim_thompson5910(28696)

 Question 189202: I would like step by step solving instructions and the answer, step by step, to this problem. The ^2 is supposed to be over the entire problem. Click here to see answer by josmiceli(9817)

 Question 189483: I need help on this problem, i don't know where to start but i know if i get a start on it i will be able to solve it. 3/7+x - 5/x = 4/7x This problem is not from a book it's on a worksheet Click here to see answer by greta_elisif(10)

 Question 190274: Factor 15 + 3y – 5x^2 – x^2y Click here to see answer by jim_thompson5910(28696)

 Question 190438: write each number in scientific notation A. 31,540,000,000 B. -0.00000502 Thanks Click here to see answer by sabrinawayjack(8)

 Question 191217: how do you solve for x in this equation .6/256x^5=1.1*10^13 I know that x should equal 7.3*10^-4, but i do not know how to get that. Does anyone know the steps to solve this? Click here to see answer by stanbon(57940)

 Question 191254: My problem is with entering e raised to a negative power on my TI-84 Plus calculator. I know what answer I need to get and I can't figure out how to enter the problem correctly. I've looked on line and through my calculator manual to no avail! The problem is: If 18 g of a radioactive substance are present initially and 3 yr later only 6 g remain, how much of the substance will be present after 11 yrs? I get to the equation y=18e ^-.2310 x 7 and I know my answer is 5.02 grams, but how do I do this on my calc to get this answer? Thanks for any help! Click here to see answer by Edwin McCravy(8999)