# Questions on Algebra: Logarithm answered by real tutors!

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 Algebra: Logarithm Solvers Lessons Answers archive Quiz In Depth

 Question 169939: Express a single logarithm and simplify log a 10,000-log a 100 Click here to see answer by Alan3354(30993)
 Question 169939: Express a single logarithm and simplify log a 10,000-log a 100 Click here to see answer by stanbon(57377)

 Question 169977: log 18 to 68.3 its multiple choice and need to evaluate to 4 decimal place Click here to see answer by nerdybill(6962)

 Question 170034: The question is rewrite the following expression using one or more properties of logarithims and evaluate without a calculator. log4- log 400,000= I have searched and cannot find any examples of how to solve this problem. Thank you for your help, Jackie Click here to see answer by stanbon(57377)

 Question 170088: The questions are rewrite the following expression using one or more properties of logarithims and evaluate without a calculator. 1. log 5 (25 2/5 -)= Plese check and see if this is correct. log5 25 2 - log5 5, 2 log5 25- log5 5, 2x2-1= 4-1=3 2. log5 125 + log5 5= I was able to figure out a portion of the problem but then got lost. Please check and help me with the rest. log5 (125x5)= log5 625 ( this is where I got lost) 3. log9 3 - log9 243= I think I figured out a portion of this problem as well, but then got lost. Please check and help me with the rest. log9 3/243 reduced to log9 1/81, log9 81 ( this is where I got lost) Click here to see answer by stanbon(57377)

 Question 170105: log5 (25^2 divided by5 -)= Rewrite the equation using one or more properties of lagarithims and evaluate without a calculator. Click here to see answer by jim_thompson5910(28595)

 Question 169502: condense the expression log 3+ 1/2 log x-log 5 Click here to see answer by Ploy(1)

 Question 170044: 1.find the domain of the function f(x) = ln (8x-24) 2. simplify log (1/10) 3. write as a single logarithm and simplify (no decimal approximations) 2 log 6 + log x - log 2 4. expand and simplify (no approximations: ln(ex) Click here to see answer by ankor@dixie-net.com(15658)

 Question 170357: ln e = ? I'm not sure it's 1 thank you Click here to see answer by checkley77(12569)

 Question 170375: Kindly explain how to resolve the following logarithmic equation 1) 1 - log (x - 2) = log (3x + 1) Thanks so much!!! Click here to see answer by Earlsdon(6287)
 Question 170375: Kindly explain how to resolve the following logarithmic equation 1) 1 - log (x - 2) = log (3x + 1) Thanks so much!!! Click here to see answer by Alan3354(30993)

 Question 170415: The Ehrenberg equationgive the relationship between height h(in inches)and the average W (in pounds)for children between 5 and 13 years old. W = 5.2911e^.0467h Find the average weight of a child who is 4 feet 6 inches tall. What height would correspond to an average weight of 107 pounds? Click here to see answer by midwood_trail(310)

 Question 170476: Solve: log base2 (x^2-203)=5 (log base 2 x squared minus 203 equals 5) Click here to see answer by grnkbul(2)
 Question 170476: Solve: log base2 (x^2-203)=5 (log base 2 x squared minus 203 equals 5) Click here to see answer by stanbon(57377)

 Question 170492: log 10 5 + 3 log 10 25 = Click here to see answer by stanbon(57377)

 Question 170635: e^4X-e^2X-6=0 How do I solve for X using natural logs? Click here to see answer by stanbon(57377)

 Question 170835: Solve the equation by isolating the natural logarithm and exponentiating both sides. Express the answer in terms of e. ln 'square root'(x+9)=9 Click here to see answer by Alan3354(30993)

 Question 170743: Write the expression as the sum and/or difference. log base3 (xsquared+2x+1), x>0 _______________ (xsquared) Click here to see answer by KnightOwlTutor(293)

 Question 170873: explain why the graph y=log (x) contains the points (1,0) no matter what b is. b Click here to see answer by KnightOwlTutor(293)

 Question 170940: Write the log expression in exponential form. Log x = y No work to show. I understand this but do not know where to start, please help! Click here to see answer by jim_thompson5910(28595)

 Question 170942: Express as a single logarithm with a coefficient of 1. 2 ln x – 5 ln y No work to show. Not sure on this, please advise! Click here to see answer by jim_thompson5910(28595)

 Question 170941: Solve for x. Log2x = 6 Show your work here: I have a B and class is almost over, but this is over my head where to start! Click here to see answer by jim_thompson5910(28595)

 Question 170945: Write the logarithm in expanded form. log 3(x^2y)^3 No work to show. Not sure how to format this on the computor, the first three is a small 3 before the equation. Please help if possible, thanks! Click here to see answer by jim_thompson5910(28595)

 Question 170951: Please show the step-by-step solution to: Prove [(log7)4][log4)9]= [(log7)9] Textbook hint: start by dividing each side by [(log7)4]..... Thank you! Click here to see answer by jim_thompson5910(28595)

 Question 170998: 3^x-2 = 1/9 So far I have x-2 log 3 = log 1/9 I am not sure if this is even correct. thanks Click here to see answer by jojo14344(1512)