# 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 389261: You buy a used truck for \$10,000. It depreciates at the rate of 18% each year for 5 years. Find the value of the truck after 5 years. Click here to see answer by MathLover1(6618)

 Question 390134: -5y^4(y^5)^2 / 15y^7(y^2)^3 i have worked this already and am not quite satisfied with my answer.. my answer is -1/3y Please solve for me so i can compare and see what i did wrong if i am wrong. thank you - gka Click here to see answer by Earlsdon(6287)
 Question 390134: -5y^4(y^5)^2 / 15y^7(y^2)^3 i have worked this already and am not quite satisfied with my answer.. my answer is -1/3y Please solve for me so i can compare and see what i did wrong if i am wrong. thank you - gka Click here to see answer by Alan3354(30970)

 Question 391007: Simplify the expression [(-14) x 22]^5 The x is for a multiplication sign. My email is Sdelliott3@msn.com Thank you very much Click here to see answer by stanbon(57226)

 Question 391134: Do you add or multiply in the equation(w^2)^3? I got w^5 and w^6. I tried both and both are a right to my book. Click here to see answer by haileytucki(390)
 Question 391134: Do you add or multiply in the equation(w^2)^3? I got w^5 and w^6. I tried both and both are a right to my book. Click here to see answer by mananth(12270)
 Question 391134: Do you add or multiply in the equation(w^2)^3? I got w^5 and w^6. I tried both and both are a right to my book. Click here to see answer by solver91311(16868)

 Question 392740: 0.4 to the fifth power times 0.4 to the tenth power equals Click here to see answer by rfer(12646)

 Question 392963: how doi solve this problem (6m)to the fourth power Click here to see answer by jim_thompson5910(28476)

 Question 392992: Solve (3a^5 b^3 c^2)^2 * (2a^2 b^5 c^4)^3 Click here to see answer by Fombitz(13828)

 Question 393060: i am to find the average annual rate of inflation...the cost of box of cereal increased from 4.25 to 5.5 over 5 years. i believe i should be solving using final amount 5.5=initial amount 4.25(1+rate of change) to the nth power or in this case the power of 5. i get 75% and that doesn't make sense. Click here to see answer by jsmallt9(3296)

 Question 393000: Solve the expression: (x^4 y^4)^6 (xy^6)-4 divided by (x^4 y^3) Click here to see answer by jsmallt9(3296)

 Question 392998: The expression: x^2 (1/9x^3) (63x^-11) equals c/x^e where the coefficient c is ___? and the exponent e is ___ ? Click here to see answer by jsmallt9(3296)

 Question 393157: I need help with the following -x-4/5=x+1/2+2/5 Thank you Click here to see answer by Alan3354(30970)

 Question 393566: how can you simplify 12x to 5th power/8x to 7th power Click here to see answer by rfer(12646)

 Question 394003: If a vendor charges p dollars each for rugby shirts, then he expects to sell 2000 - 100p shirts at a tournament. a) Find a polynomial R(p) that represents the total revenue when the shirts are p dollars each. b) Find R(5), R(10), and R(20). Click here to see answer by stanbon(57226)

 Question 394215: I think I am doing this problem wrong. If I am can you help me to find the mistake I am making? simplify (10y^7)^4 (6y^-8)^-3 This is multiplication and what I have so far is 10^4(y^7)^4(1/6)^3(1/y^8)^3 then I got 10000y^11(1/216)(1/y^11) I feel like that is not right please let me know what I am doing wrong. I have checked the book and I'm not understanding it a whole lot. Click here to see answer by Alan3354(30970)

 Question 394440: What is 4 times 3 over 2 to the negative first power? Click here to see answer by jim_thompson5910(28476)

 Question 394607: I need to find the last two digits from the following numbers : 15^121 Click here to see answer by edjones(7569)

 Question 394670: Please help me to understand how to solve the equation: The answer for N is suppose to be 3. I cannot figure it out. ^2n+1 is the exponent for the first half of the if statement. ^n+18 is the exponent for the second half of the if statement. If I substitute 3 for the N, is it 8 to the 23 power plus one power? or 8 to the second power times the third power plus one power. Anyway, does 8 to the 7th power = 2 to the 21 power? Click here to see answer by ankor@dixie-net.com(15628)

 Question 394614: I need the last two digits from the following numbers 11^2011. I need all work t be shown please, so I can fugure out how to do my other problems, PLEASE and super huge thank you!! Click here to see answer by Alan3354(30970)

 Question 397013: This one is really bugging me: I understand that 2(2^n-1) (that is, two times two to the n-1 power) is equal to 2^n since the rule is "add the exponents if the bases are equal"). But why can't I compute it this way: 2(2^n-1) = 4^n-1 which could be rewritten as (2^2)^n-1 which, following the rule "multiply exponents when you have something to a power taken to another power" would then distribute as 2^2(n-1) = 2^2n-2. But this is a completely different answer! This doesn't make any since so surely I am making an obvious mistake. But given, for example 2(x^n+1) don't get 2x^n+1??? Thank you! Click here to see answer by jim_thompson5910(28476)

 Question 397214: i really dont understand the solving for y or x.. Click here to see answer by mananth(12270)

 Question 398890: I have difficulty with these type problems: -2(-3)? Minus 2 to a minus 3 exponent. Click here to see answer by Alan3354(30970)