# Questions on Algebra: Logarithm answered by real tutors!

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 Algebra: Logarithm Solvers Lessons Answers archive Quiz In Depth

 Question 453201: just need some log help. stuck on all this. 1)41nx-31ny+21nz ---express as a single log 2)log3 x-log3(x-2)=1 3)expand log x^4y^5/square z Click here to see answer by lwsshak3(6761)

 Question 453403: how would you write these as single logarithms? 2 log h(w) + 3 log h(v) log2(50)-log2(10) Click here to see answer by lwsshak3(6761)

 Question 453194: Rewrite 12^(x+1) = 5^(x) as an exact value using logarithms. Click here to see answer by lwsshak3(6761)

 Question 453192: Given logb(3x) = 25 and logb(27) = k - 3logb(x) then the value of k is what? *The 'b' after the log that is NOT in brackets is the base of the log. *Also we have a formula sheet with all of the Log Laws Click here to see answer by lwsshak3(6761)

 Question 453951: solve for x. log(base 7) (2x+3) = log(base 7) (x+2) Click here to see answer by solver91311(17077)

 Question 453996: How do you solve this? log3(x+6) - log3 x = 5 Find the value of x. Click here to see answer by solver91311(17077)

 Question 454655: What is the logarithmic form of the equation y=20^-3/2 Click here to see answer by robertb(4012)

 Question 454843: Solve for x using logarithms: Solve for x: Log base 4 of(x-6)+ log base 4 of(x+2)=2logx Click here to see answer by stanbon(57967)

 Question 454900: Solve for x: log base 4 of(x^2+3x) - log base 4 of(x+5)=1 Click here to see answer by stanbon(57967)

 Question 454968: 4+5e^-x = 0 all I can come up with is there is no solution or x = .223 I don't have a good feeling about either one, I'm just stumped on this one. I would appreciate any help I can get! Thanks!! Click here to see answer by Alan3354(31529)

 Question 454991: Hello, I need help with this problem: Solve logarithmic equation log(3x+15)=2 and write 5 lnx + 1/2 lny - 4 lnz as a single logarithm. Thank you very much. Click here to see answer by nerdybill(7008)

 Question 455079: Hi. My teacher gave me a packet to do for a test next wed and i was wondering if you could help me with a problem. Write each expression using common logs. logBASE3(2x) Click here to see answer by Alan3354(31529)

 Question 455078: Hi. My teacher gave me a packet to do for a test next wed and i was wondering if you could help me with a problem. Solve give completely simplified answers in terms of natural logs. 3^x = 5^x-1 thanks for your help Click here to see answer by Alan3354(31529)

 Question 455076: Hi. My teacher gave me a packet to do for a test next wed and i was wondering if you could help me with a problem. Solve. Give answers to the nearest 100th. 1.58^x=4.02 thanks for the help Click here to see answer by amoresroy(333)

 Question 455074: Hi. My teacher gave me a packet to do for a test next wed and i was wondering if you could help me with a problem. Solve for X. Give answers to the nearest 100th. logBASE2(logBASE2(16))=logBASE7(x) thank you for your help! Click here to see answer by nerdybill(7008)

 Question 455075: Hi. My teacher gave me a packet to do for a test next wed and i was wondering if you could help me with a problem. Solve for x. Give answers to the nearest 100th. logBASE4(logBASE8(64))=logBASE5(x) thank you! Click here to see answer by lwsshak3(6761)

 Question 455207: Which logarithmic sp? equation is eqivalent to L^m = E A.logBASEL E= m B.logBASEE L= m C.logBASEm E= L D.logBASEE m= L Click here to see answer by stanbon(57967)

 Question 455203: thank you in advance for helping me with this problem. i have a test next week and i cant figure it out. write each expression using common logs. (logBASE8(x))-2logBASE8(y) Click here to see answer by Gogonati(817)

 Question 455205: hi. i have a test coming up and i was wondering if you could check this problem for me. solve. give answers to the nearest 100th. x^(x+1) = 4th root of 56.6 when i did it i got -.594 Click here to see answer by richwmiller(9144)

 Question 455322: What does it mean to "find the domain and range of the composition f of g? and to write the answer in "set notation" ??? Thank you Click here to see answer by stanbon(57967)

 Question 455289: If log(base 2) (1/4)=log(base 8) x, what is the value of x? Click here to see answer by Alan3354(31529)

 Question 455567: What is the solution of the system of equations? y=-x+2 y=x-8 Click here to see answer by richwmiller(9144)

 Question 455028: I need to know how to get the log for the following equation: 478 = 18.5(10^x) I keep getting 2.11449, but the correct answer is 1.4123 I need to know what I am doing wrong. Thanks for your help! Click here to see answer by lwsshak3(6761)

 Question 456478: Write the expression and a simple logarithm log(3x + 5) - log x Click here to see answer by tquon(6)

 Question 456486: Which of these equations is the exponential form of ln ( 1/e ) = –1? Click here to see answer by Edwin McCravy(8999)

 Question 456573: CAn you please tell me what is the Lowest Common Multiple of 2x to the forth ppwer-2x square y square, 4x to the fifth power + 8x to the forth power y + 4x to the third power y square and 6x square + 6xy Click here to see answer by richwmiller(9144)

 Question 456781: Solve: logbase3(logbasex(logbase4 16)) = 1 Solve: 6^2logbase6 X + logbase6 X =125 Write the expression as a single logarithm: 3loga - logb - (1/2)logc Click here to see answer by stanbon(57967)

 Question 456866: 1/4log base3 2 plus 1/4log base 3 x Click here to see answer by nerdybill(7008)

 Question 457238: solve for x: ln(x+2)=16. Give exact answer and decimal approximation to the nearest hundredth. Click here to see answer by josmiceli(9817)

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