# Questions on Algebra: Logarithm answered by real tutors!

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 Algebra: Logarithm Solvers Lessons Answers archive Quiz In Depth

 Question 552114: Solve the equations: 4log4x - 3log5y =1 log2x - log5y =2 Click here to see answer by AnlytcPhil(1276)

 Question 552279: My teacher did not explain any of this stuff to us, so if someone could please EXPLAIN both these types of problums to me that would be awesome. 1) log 7 = 0.8 log 12 = 1.1 log 8= 0.9 Find log 1/64 2)log[5] 11 = 1.5 log[5] 6 = 1.1 log[5] 4 =0.9 Find log[5] 264 Click here to see answer by AnlytcPhil(1276)

 Question 553047: Why does log(base 9)(power n/2) of 9 simplify to 2 to the n? The power n/2 is not on the 9 it is on the log. thanks Lynn Click here to see answer by Alan3354(30959)

 Question 553200: Using ln 2= 0.693, ln 3= 1.099, and ln 7= 1.946 to evalute the logarithm for ln 28 Click here to see answer by Alan3354(30959)

 Question 553515: write 1 - 3log(base 5) x as a single logarithm Click here to see answer by rapaljer(4667)

 Question 553523: How would I go about solving 4 = e^2ln4x ? I've tried taking natural logarithms on each side to give ln4 = lne.ln8x but I'm not too sure that that's right! Any help would be much appreciated, thank you. Click here to see answer by rapaljer(4667)

 Question 553714: lg x + ln 2x = 3 solve for x. thank you Click here to see answer by stanbon(57219)

 Question 554033: If log x^5y^3=25 and log x/y=3 what is log x? Click here to see answer by Theo(3458)
 Question 554033: If log x^5y^3=25 and log x/y=3 what is log x? Click here to see answer by rapaljer(4667)

 Question 554086: If log a=.5, log b=.3, and log c= 16, solve the following equation for x. a^x b^x=c Can somebody please try to guide me in the right direction? I do not want an answer to the problem, but only some guidance where to start. Thanks! Click here to see answer by josmiceli(9649)

 Question 554218: log 4 - log 400= can you show me how its done Click here to see answer by rapaljer(4667)

 Question 554474: log base 3(405) - log base 3 (5) Click here to see answer by stanbon(57219)

 Question 555048: what is the answer of the logarithm of 25 to the base 5 divided by the logarithm of 4 to the base 2? Click here to see answer by ankor@dixie-net.com(15624)

 Question 555609: Write 150 as a sum of two logarithms. Click here to see answer by Alan3354(30959)

 Question 555740: here is a question I have had some difficulty with as far as order of operations go on the calculator... log 6(x-5)+log 6x=2 Any help would be greatly appreciated Click here to see answer by Alan3354(30959)

 Question 555917: Determine the slope of the tangent to the curve next to the point where x = 4 f(x) = 4x^3 - 5x + 2sqrt(x) Thank you Click here to see answer by solver91311(16868)

 Question 556295: write 1+log(base 2) X^3 as a single logarithm. *i dont understand how to do the qustion without changing it into an equation, which would be incorrect. Ex. 1+log(base 2) X^3 log(base 2)X^3 = 1 (wrong!) how would i do it ?? Click here to see answer by scott8148(6628)
 Question 556295: write 1+log(base 2) X^3 as a single logarithm. *i dont understand how to do the qustion without changing it into an equation, which would be incorrect. Ex. 1+log(base 2) X^3 log(base 2)X^3 = 1 (wrong!) how would i do it ?? Click here to see answer by josmiceli(9649)

 Question 556489: How do I solve this? I think it's with solving by logs but I can't get the right answer. 6(2^(3x-1))-7=9 Click here to see answer by josmiceli(9649)

 Question 556509: log6 (x+7)= log 6 (12) what is x Click here to see answer by prateekagrawal(56)

 Question 556913: Find the value of in the follwing: LOG x=-4 10 plzzzzzzzzzzzzzzzzzzzz answer this question Click here to see answer by stanbon(57219)

 Question 556922: What is the solution to the equation log 2 x – log 2 4 = 2 Click here to see answer by TutorDelphia(193)