# Questions on Algebra: Logarithm answered by real tutors!

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 Algebra: Logarithm Solvers Lessons Answers archive Quiz In Depth

 Question 405675: set this to a single logarithm: log 10 + log 10 Click here to see answer by nerdybill(6958)

 Question 405990: My teacher didn't teach us how to deal with numbers in front of log. 5 is the base Click here to see answer by Tatiana_Stebko(1326)

 Question 405954: how do you use natural logarithm to solve e^x=18? Click here to see answer by richard1234(5390)

 Question 405955: Use the facts that log 3 = 0.4771 and log 4 = 0.6021 to find the value of the logarithm. log 12 Click here to see answer by lwsshak3(6490)

 Question 403430: Write the expression as a single natural logarithm 3ln a-1/2(lnb+lnc^2) Click here to see answer by lwsshak3(6490)

 Question 406163: log base 9 of 6x cubed minus log base 9 of 2x equals 1 Click here to see answer by jsmallt9(3296)

 Question 406811: apply binary compliments to subtract 101111base2 from 110111base2.how do you even start on these?? Click here to see answer by Alan3354(30993)

 Question 407091: How do I convert the formula L=10* Log(I/Io) into exponent form? I already know how to do the decibels (obv with the formula above) but I can't find the I/Io unless I know how to convert that formula into exponent form. Please help :) Click here to see answer by jsmallt9(3296)

 Question 407005: How do I solve 2x^5=100 using a logarithm with an answer to three significant digits? Click here to see answer by lwsshak3(6490)

 Question 407676: What is the domain of Log3(x+2)?, with explanation Click here to see answer by scott8148(6628)

 Question 407594: Solve for x, given the equation, 5+3ln(x) = 7ln(x^2). Answer with three significant digits. Click here to see answer by lwsshak3(6490)

 Question 407766: if x^2 + y^2 = 6xy prove that: 2log(x+y) = log x + log y +3log 2 plz i want the answer quickly Click here to see answer by robertb(4012)

 Question 407909: can anybody help me solve this question it says;graphically solve the following simultaneous equations y=1+0.4x y=4-0.6x Click here to see answer by Alan3354(30993)

 Question 407913: solve the equation (2^x).(2^x+1)=10 correct to 3decimal places im getting my answer as 1.161 but it dont tally when i substitute the value for x pliz help Click here to see answer by graphmatics(170)

 Question 408682: Solve the following exponential equations using logarithms: 2^(x) = 3^(x+1) Feeling pretty lost on this one... I've tried to google for similar examples, but when I do find a similar problem it's solves using a form like this: "xln(2)=(xln(3)+ln(3))" I think this is a little beyond where I am now :( Looking for a more basic algebra solution! Appreciate any help!! Thanks :) Click here to see answer by richard1234(5390)
 Question 408682: Solve the following exponential equations using logarithms: 2^(x) = 3^(x+1) Feeling pretty lost on this one... I've tried to google for similar examples, but when I do find a similar problem it's solves using a form like this: "xln(2)=(xln(3)+ln(3))" I think this is a little beyond where I am now :( Looking for a more basic algebra solution! Appreciate any help!! Thanks :) Click here to see answer by jim_thompson5910(28546)

 Question 408674: Solve the following expression using a common base: (1/2)^(4x+1)=(1/4)^(3x+3) I figured that I could turn 1/2 into (1/4)^2, (you end up with x=1/5), but LS does not equal RS with x=1/5 I'd appreciate some help!? Thanks :) Click here to see answer by scott8148(6628)

 Question 408709: Hi, I would like to know how to convert a log value back to its normal value. I looked up on the internet and found tat in can be done by (10^x), where x is the logarithmic value and the answer i get would be the actual value before applying the log. Thanks in advance. Harish. Click here to see answer by richard1234(5390)

 Question 408784: How do I change this to a quotient or product? Click here to see answer by jsmallt9(3296)

 Question 408367: what is the solution for 4 to the 2nd power x = 28 Click here to see answer by jsmallt9(3296)

 Question 408847: Solve the following expression using a common base: (1/2)^(4x+1)=(1/4)^(3x+3) I figured that I could turn 1/2 into (1/4)^2, (you end up with x=1/5), but LS does not equal RS with x=1/5 here's what I tried: (1/2)^(4x+1)=(1/4)^(3x+3) (1/4)^2(4x+1)=(1/4)^(3x+3) (1/4)^(8x+2)=(1/4)^(3x+3) 8x+2=3x+3 8x-3x=3-2 5x=1 x=(1/5) LS: =(1/2)^(4x+1) =(1/2)^(4(1/5)+1) =(1/2)^1.8 =0.287 RS: =(1/4)^(3x+3) =(1/4)^(3(1/5)+3) =(1/4)^(3.6) =0.0068 LS does not equal RS, so I'm oviously wrong... I'd truly appreciate any help I could get!! Thank You :) Click here to see answer by ewatrrr(10682)