# Questions on Algebra: Exponents and operations on exponents answered by real tutors!

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 Algebra: Exponents and operations on exponents Solvers Lessons Answers archive Quiz In Depth

 Question 201263: I have a math problem that I could use some help with please. Calculate the answer: (-6/-4) . (-15) = _______ -3 Click here to see answer by stanbon(57984)

 Question 201355: Here is another problem I have an cannot figure out. Using the formula L=2C + 1.57(D+d)+ D+d find L for D = 8",d=5,and C=19. _____ 4C Click here to see answer by stanbon(57984)

 Question 201368: Write the expression using exponent notation. sq.rt. 5z Click here to see answer by user_dude2008(1861)
 Question 201368: Write the expression using exponent notation. sq.rt. 5z Click here to see answer by jsmallt9(3296)

 Question 201356: Here is another problem I have an cannot figure out. Using the formula L=2C + 1.57(D+d)+ D+d/4C find L for D = 8",d=5",and C=19". Click here to see answer by RAY100(1637)

 Question 201396: Here is one of my math problems. I could really use help with. Thanks The lowest temerature on the moon is -279 degrees F which occurs durning lunar dawn. If the difference between this temerature and the highest temperature is 540 degrees F, what is the highest temperature on the moon? Click here to see answer by Alan3354(31538)

 Question 201397: Here is a problem I have and have trouble with. Thanks Janet A company showed a negative balance of \$4,852 in the books at the start of january 2008.By the end of June 2008, the company showed it had a positive balance of \$15,983 in the books. What was the amount of money the company made over the last six months? Click here to see answer by Alan3354(31538)

 Question 201439: Once again I need help with a math problem. janet From a box of bananas person "A" eats one third of the contents. A while later person "B" eats one third of the remaining bananas. A while later person "C" eats one third of the remaining bananas. When person "C" finished eating there were 8 bananas left in the box. How many bananas were in the box originally? Click here to see answer by solver91311(17077)
 Question 201439: Once again I need help with a math problem. janet From a box of bananas person "A" eats one third of the contents. A while later person "B" eats one third of the remaining bananas. A while later person "C" eats one third of the remaining bananas. When person "C" finished eating there were 8 bananas left in the box. How many bananas were in the box originally? Click here to see answer by jsmallt9(3296)

 Question 201440: I appreciate a respond "If , what is the value of ? " Click here to see answer by Alan3354(31538)

 Question 201628: Dear tutor,I 've checked one of the problems which was like my question but I couldn't mach the answer with mine.could you help me in this way ? Choose the answer Of if : a.) b.) c.) d.) e.) Click here to see answer by RAY100(1637)

 Question 202231: 100(1.11)^(x/6)=400 I can't figure out how to enter this equation into my scientific calculator to get an answer of 79.70 (answer rounded to the nearest hundredth) Click here to see answer by RAY100(1637)

 Question 202271: How would I simplify the following expressions: a. X4 * X5 b. Z9/Z10 Click here to see answer by Earlsdon(6294)

 Question 202519: Apply transposition and substitution to News second law of motion. a.F = ma [Force (F) = mass (m) times accelertation (a)] If F = m times a,m =? and a = ? Thanks janet Click here to see answer by Earlsdon(6294)

 Question 202539: I have to quick questions on exponents I basically have to simplify them 1. [(9a^3)/(10b^4)]^-2 I came up with: (9^-2*a^3*-2)/(10^-2b^4*-2) (81a^6)/(100b^8) Is that simplified or is there more to do? 2.(6x^5y^2z^-4)(4x^-2y^4z^-1) I got= 6x^5y^2z^-4/4x^-2y^4z^-1 Am I suppose to flip the equation to get rid of the negative exponents are do I just add them together they way they are? (u^5z^8)/(z^-5u^-4) In this one too I flip the equation to: Z^5u^4/u^5z^8 and i got u^9z^13 Was I suppose to flip it? Click here to see answer by Earlsdon(6294)

 Question 202586: Need help with this factoring equation: 3x^2-17xy+24y^2 My try:9x-17xy+576y ? Click here to see answer by jim_thompson5910(28717)
 Question 202586: Need help with this factoring equation: 3x^2-17xy+24y^2 My try:9x-17xy+576y ? Click here to see answer by solver91311(17077)

 Question 202817: To whomever decides to help me. I have been working on this problem ALL DAY LONG! Here it is: ((x+2)*(1/2)(x+1)^(-1/2)-(x+1)^(1/2))/(x+2)^(2). I have gotten several different answers. I am unsure of what I am doing wrong. At first I tried bringing down the negative exponent and then canceling out, I got (-1/2)/(x+2)but I don't think that it is correct. All the other sulutions are a bunch of mumble jumbles. I thought maybe I should convert into rational terms but I ended with an imaginary number (SQRT of 1/2) in the domnimator but I don't think that is correct at all. Any help at all would be greatly appreciated. Thanks you soooooo muchs! Maggie Click here to see answer by jim_thompson5910(28717)

 Question 203189: To express 20 as a sum of different powers of 2, we would write 20 = 24 + 22. The sum of the exponents of these powers is 4 + 2 = 6. If 400 were expressed as a sum of at least two distinct powers of 2, what would be the least possible sum of the exponents of these powers? Click here to see answer by jsmallt9(3296)

 Question 183469: WHAT IS THE ANSWER IF I EVALUATE 6 TO THE 2ND POWER AND ALSO8 TOTHE 2ND POWER AND ALSO4 TO THE 2ND POWER Click here to see answer by xshorty73(6)

 Question 204416: Find the exponential function f(x)=a^x whose graph goes through the point (3,1/125). a= I have no idea how to go about finding the equation :S Click here to see answer by scott8148(6628)

 Question 204431: Suppose that the graph of f(x)=Ca^x passes through the points (2, 15.1875) and (3, 34.171875). Find a formula for f(x). f(x) = Click here to see answer by scott8148(6628)

 Question 204458: Time (h) 0, 8, 16, 24, 32, 40, 48 Amount (g) 4.84, 4.63, 4.52, 4.45, 4.33, 4.19, 4.08 (a) Find an appropriate exponential model of the data points. Amount at time t, A(t) = I know I have to make two equations y=Ca^x would someone be able to explain the steps please? Click here to see answer by stanbon(57984)

 Question 205003: Can anyone help me with this world problem. Your help is greatly appreciated. 8. A woman buys three board games for \$107.10, including tax. If each board game cost \$34, what was the sales tax rate? Click here to see answer by rfer(12731)
 Question 205003: Can anyone help me with this world problem. Your help is greatly appreciated. 8. A woman buys three board games for \$107.10, including tax. If each board game cost \$34, what was the sales tax rate? Click here to see answer by MathTherapy(1484)

 Question 205001: Can anyone help me with these? I am struggling with these and I need to pass this class. Any help is appreciated. 3. Simplify: (8x2 – xy + 4y2) – (12x2 – y2 + 7xy) 4. Simplify: (12x2y2 – 15xy2)/(3xy) Click here to see answer by Alan3354(31538)

 Question 205000: Can someone help me with these? I am having a to ugh time with this. I do appreciate anyone who can help. 1. Simplify: 4[a – b(2 + 3a)] – 3a[2+b(4 – a)] 2. Simplify: (7x2 – 2y + z) + (3y – z) + (4x2 – 6y) Click here to see answer by Alan3354(31538)
 Question 205000: Can someone help me with these? I am having a to ugh time with this. I do appreciate anyone who can help. 1. Simplify: 4[a – b(2 + 3a)] – 3a[2+b(4 – a)] 2. Simplify: (7x2 – 2y + z) + (3y – z) + (4x2 – 6y) Click here to see answer by MathTherapy(1484)

 Question 205004: I need help with this word problem. Can anyone help me? I do appreciate whatever you can do. 9. Sandy has \$3.25 in change. She has five more dimes than quarters but twice as many nickels as dimes. Express the given information as an algebraic equation and simplify. [You are not required to solve the problem. Click here to see answer by ankor@dixie-net.com(15747)
 Question 205004: I need help with this word problem. Can anyone help me? I do appreciate whatever you can do. 9. Sandy has \$3.25 in change. She has five more dimes than quarters but twice as many nickels as dimes. Express the given information as an algebraic equation and simplify. [You are not required to solve the problem. Click here to see answer by scott8148(6628)