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

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

Question 1120410: Hi, I need some help with this problem:
"2^{n+3}+2^{3n-2}+2^{5n+1}=32"
Thanks!
Click here to see answer by Boreal(15235)

Question 1121856: Please help with simplifying this expression
(Y to the 5th power times z to negative 2) exponent 3/10
Times (y to the 5th power)exponent 6
Click here to see answer by josgarithmetic(39623)

Question 1122429: solve for x:
(3x)^-2/3 = 0.04
Click here to see answer by josmiceli(19441)

Question 1123069: Need assistance please. Really, really lost. More than anything I would like to understand how to come to the solution. I have been working on this for quite some time.
[(3x^4)/(2y^-3)]^-3
Simplify using positive exponents only.
Thank you!
Click here to see answer by Edwin McCravy(20060)

Question 1123984: The exponent of the greatest power of 40 that will divide into 80! with no remainders is
A)39
B)78
C)20
D)19
E)26
Click here to see answer by ikleyn(52832)

Question 1126432: What's 4a^2^ - a^3^ divided by a^4^ ? I have 36 +27 divided by 81 please can someone explain. a=-3
Click here to see answer by Edwin McCravy(20060)

Question 1126432: What's 4a^2^ - a^3^ divided by a^4^ ? I have 36 +27 divided by 81 please can someone explain. a=-3
Click here to see answer by Theo(13342)

Question 1126432: What's 4a^2^ - a^3^ divided by a^4^ ? I have 36 +27 divided by 81 please can someone explain. a=-3
Click here to see answer by Alan3354(69443)

Question 1126570: The weight of 1m^3 of air is approxiamately 1.3� 10^3 g. Suppose that the volume of air inside of a building is 3 � 10^6 m^3. How much does the air inside the building weight?
I really need help, i dont know if i should divide or multiply please help me.
Click here to see answer by ikleyn(52832)

Question 1127408: 8^2+4^2
Click here to see answer by josgarithmetic(39623)

Question 1127427:
Click here to see answer by josgarithmetic(39623)

Question 1127409: f(3x+1) = 5^3x+1 -3
Click here to see answer by Alan3354(69443)

Question 1127409: f(3x+1) = 5^3x+1 -3
Click here to see answer by MathLover1(20850)

Question 1127407: 2^6x+1 - 8^2x
Click here to see answer by Alan3354(69443)

Question 1127407: 2^6x+1 - 8^2x
Click here to see answer by MathLover1(20850)

Question 1127958: y+y/a=b, if a doesn�t equal -1
Click here to see answer by FrankM(1040)

Question 1127958: y+y/a=b, if a doesn�t equal -1
Click here to see answer by MathTherapy(10555)

Question 1128801: Could you please provide a full step by step answer for the following equation x2-4x+3 over 3-x cheers mike.
Click here to see answer by ikleyn(52832)

Question 1128801: Could you please provide a full step by step answer for the following equation x2-4x+3 over 3-x cheers mike.
Click here to see answer by MathLover1(20850)

Question 1129912: I HAVE TAKEN THE ADVICE OF SOMEONE AND PRESENTED TWO PROBLEMS REGARDING SIGNS OF FRACTIONS IT WOULD BE MUCH AP2PRECIATED IF THE PROBLEMS WOULD BE GIVEN STEP BY STEP
CHEERS MIKE PROBLEM 1, 1-K^2/3K^2-6K+3
PROBLEM 2, X/X+1 + 4/1-X +X^2-5X-8/X^2-1 HOPE THIS IS CLEAR.

Click here to see answer by stanbon(75887)

Question 1131098: This is my latest problem if some one would be so kind to have a go ,changing the following fraction into a mixed expression . k^3-1/k-1 if this could be shown completely broken down step by step of the process as this would be much appreciated kind regards mike.
Click here to see answer by MathLover1(20850)

Question 1131478: if you begin with 32 psi and lose 0.02 psi per day, which equation will predict this data where x represents the number of days and f(x) represents psi?
Click here to see answer by Alan3354(69443)

Question 1132139: A computer can do a calculation in 4x10^-6 seconds. How long, in seconds, will it take the computer to do 8x10^12 such calculations? Give your answer in scientific notation/ standard form
Click here to see answer by Theo(13342)

Question 1133291: How do I write 4/27(2^(3+m/3)+2^(m/3))^3 as a power of 2?
Click here to see answer by Alan3354(69443)

Question 1133399: simplify:
(-3x^3y^2)(5xy^-1)
Click here to see answer by MathLover1(20850)

Question 1133511: Vacek is paid a monthly commission on a graduated basis of 7.5% on net sales of $7000, 9% on the next $8000, and 11% an any additional sales. If sales for April were $21,500 and sales returns were $325, what were his gross earnings for the month?
Click here to see answer by Theo(13342)

Question 1133510: Solve the following equation: −4/5(7𝑦+5)−6/10(−6𝑦−7)=2𝑦−(148/25)
Simplify:
[(𝑥^3𝑚)^−2𝑛^2/𝑛^-1𝑥^-4]^-2
Click here to see answer by MathLover1(20850)

Question 1133538: 27 to the power of 1/3 X 7 to the power of -2
I need to know how to get to the answer and to get the answer as a fraction.
Click here to see answer by Boreal(15235)

Question 1136383: This is my latest problem if some one may wish to kindly share i hope i have done the following correctly (5*y^2-7*y+1)/(y-1) this is changing a fraction into a mixed expression i have seen the step by step answer, im aware that a similarity to long division is done here. But im a bit baffelled how -1 is the numerator to part of the final answer, may someone please clearly state how this is achieved Kind regards mike.
Click here to see answer by MathLover1(20850)

Question 1139818: (8 to the-3 power) * ( 4 to the 4th power)
Click here to see answer by josgarithmetic(39623)

Question 1142679: If it takes 4 lb of flour to make 3 loaves of bread, how much flour is needed to make 4 loaves of bread?

Click here to see answer by ikleyn(52832)

Question 1142678: Christina can paint a chair in 3 hours, and Victoria can paint a chair in 5 hours. How many hours will it take to paint the chair when the two girls work together? Write an equation that could be used to model this problem. Let t represent the time (in hours) that it will take to paint the chair when the two girls work together
Click here to see answer by ikleyn(52832)

Question 1142677: If David painted for 5 days less than Pierre and Pierre painted for n days, write an algebraic expression that represents the number of days David painted.
Click here to see answer by ikleyn(52832)

Question 1144237: Hi, I just have a quick question about simplifying negative exponents. Does the coefficient of a variable stay with the number when factoring? i.e. Would 3m^-4 be simplified to 3/m^4, or would it be simplified to 1/3m^4? Thank you.
Click here to see answer by ikleyn(52832)

Question 1144456: Please help me solve
-5/2 - (-2/9)
Click here to see answer by josgarithmetic(39623)

Question 1144457: Please help me solve

Click here to see answer by ikleyn(52832)

Question 1144462: Would you please help me simplify

Click here to see answer by ikleyn(52832)

Question 1144461: Please help me simplify this hard problem

Click here to see answer by ikleyn(52832)

Question 1144460: Please help me simplify

Click here to see answer by ikleyn(52832)

Question 1144459: Please help me simplify this

Click here to see answer by ikleyn(52832)

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