# Questions on Algebra: Logarithm answered by real tutors!

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 Algebra: Logarithm Solvers Lessons Answers archive Quiz In Depth

 Question 625435: 3.5 million drop by two logs equals what number Click here to see answer by Alan3354(30993)

 Question 625597: could u help me,,,4e to the power of x minus 3 = 0.. Click here to see answer by Edwin McCravy(8909)

 Question 625857: Solve for x. Round to the nearest ten-thousandth. ln(e^6x)=61 e^61 = e^6x 6x=61 x=61/6 x=10.6667 Click here to see answer by jim_thompson5910(28595)

 Question 625866: Which of the following is the simplified version of (1/2) log 3 x + 2 log 3 y + 4 log 3 z ? Click here to see answer by oscargut(891)

 Question 626329: Without a calculator, show that + > 2. Click here to see answer by Alan3354(30993)

 Question 626356: Use the Laws of Logarithms to combine the expression. 5log(x)-((1)/(5))log(x^(2)+1)+5log(x-1) Click here to see answer by stanbon(57361)

 Question 626403: Find the exact solution, using common logarithms, and a two-decimal-place approximation, when appropriate. log(x^(2)+6)-log(x+1)=2+log(x-1) x= x~ Click here to see answer by lwsshak3(6509)

 Question 626689: How do you condense this expression to a logarithm of a single quantity? (9/2)log^5(z-4)= log^5(z-4)^??? Thanks! P.S. "5" is the base of the log. Click here to see answer by fcabanski(874)

 Question 626696: if log 125=b, then express log5 in terms of b Click here to see answer by fcabanski(874)

 Question 626769: How do you condense this expression into a logarithm of a single quantity? 7[In z + In(z+7)]-6 In(z-5)= ??? I thought the answer would be something like this: In((x^(-6)/(z+7)*(z-5))^(7)) My answer automatically comes out to be wrong, though. I'm not sure how to answer this one. Please help me. Thank you! - Cassidy Click here to see answer by jim_thompson5910(28595)

 Question 626809: How do you condense this expression into a single quantity? log^3 6- log^3 (t)= ??? P.S. the "3" represents the base of the log. Thank you! - CEW Click here to see answer by jim_thompson5910(28595)

 Question 626908: Find the exact solution, using common logarithms. log(x^(2)+3)-log(x+3)=2+log(x-3) Click here to see answer by jsmallt9(3296)

 Question 626971: How do I use the properties of logarithms to expand this expression as a sum, difference, and/or constant multiple of logarithms? Thanks. log^b sqrt(x)*y^2/z^2 Hope that makes sense... - Cassidy W. Click here to see answer by ewatrrr(10682)

 Question 626995: if logb 6 = 1/4, then log b 36= what? Click here to see answer by ewatrrr(10682)
 Question 626995: if logb 6 = 1/4, then log b 36= what? Click here to see answer by fcabanski(874)

 Question 627046: solve the exponential equation. express irrational solutions as decimals correct to the nearest thousandth. 2^x-2=3^2x Click here to see answer by solver91311(16897)

 Question 627014: What percent of 139.87 is 123 and what percent of 136.78 is 138 Click here to see answer by rfer(12660)

 Question 627187: Solve the following equation log (2y) + Log (4y-1)=2 Click here to see answer by hammy(9)
 Question 627187: Solve the following equation log (2y) + Log (4y-1)=2 Click here to see answer by josmiceli(9681)

 Question 627217: After t years, the annual sales in hundreds of thousands of units of product q is given by q=(1/2)^(.8)^t 1)After how many years will the annual sales be about 95,350 units? Show your work. (Hint: You will have to take the log of both sides twice.) Click here to see answer by jsmallt9(3296)

 Question 627466: How do I rewrite this expression as a logarithm of a single quantity? 3 (Im x - 2 In (x^3 + 2))+ 4 In 5 = ??? And... How do I solve these equations? Thanks! 1.) 2 In x = 14 ??? (demonstrate how?) 2. log^2 x + log^2 (x + 2) = log^2 (x + 6)= (please show steps!) FYI: The "2" represents the base of the log for question #2. Again, thank you. - Cassidy Click here to see answer by jsmallt9(3296)

 Question 627712: I am trying to find the inverse of the following function: f(x) =-4(x-3)^2+5 This is what I have so far(I don't think it is right): y=-4(x-3)^2+5 y-5= =-4(x-3)^2 (y-5)/(-4)=(x-3)^2 take the sqrt both sides and get sqrt of (y-5)/(-4)= x-3 x= sqrt of (y-5)/(-4)+3 When I graph this it is wrong...What am I doing wrong? Thanks for the help! Click here to see answer by solver91311(16897)

 Question 627718: Hello! I asked for help on these questions earlier, but no one has responded yet. Click here to see answer by richwmiller(9143)

 Question 627755: If a=2 and b= 3, write the expression ln(9) in terms of a and b. Note that you are not being asked to approximate the value of the expression Click here to see answer by solver91311(16897)

 Question 627920: Solve exponential eequations, epress in terms of ln e^x+5 = 8 Click here to see answer by ewatrrr(10682)

 Question 627858: Evaluate the logarithmic expression. Do not round the expression until the final answer. When necessary, round to the nearest hundredth. log[2]32 (1/5) Click here to see answer by jsmallt9(3296)

 Question 628155: Write the expression as a single logarithm with a coefficient of 1. Assume all variable expressions represent positive real numbers. 3log(x) + (1/4)log(y) + log(x + 7) = ? Click here to see answer by reviewermath(527)

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