# Questions on Algebra: Logarithm answered by real tutors!

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 Algebra: Logarithm Solvers Lessons Answers archive Quiz In Depth

 Question 412938: can anyone help me solve the following log equation: Solve for x: 2^(x-1) = 3^(2x-1) Click here to see answer by jsmallt9(3296)

 Question 413440: Trying to help my son - but it's a long time since I tackled this subject Transpose the formula b=log e t - log e D to make t the subject Show using laws of logarithms that I=log 2 (1/p) can be expressed as I = -log 2 (p) Click here to see answer by josmiceli(9686)

 Question 413995: given that log27(base a)+log4(base b)=5 and log27(base a)-log4(base b)=1 without using tables,find the values of a and b Click here to see answer by solver91311(16897)

 Question 414079: how would you find the value of x in the question logx9=-2 Click here to see answer by ewatrrr(10682)

 Question 414235: Write this expression in logarithmic form: (1/3)^-2 = 9 Click here to see answer by jsmallt9(3296)

 Question 414318: Hello! I am having a lot of trouble with logs. I understand the rules for the most part. The problem is ( the 3 is a subscript) log3x = .24863 find square root of x Click here to see answer by ewatrrr(10682)
 Question 414318: Hello! I am having a lot of trouble with logs. I understand the rules for the most part. The problem is ( the 3 is a subscript) log3x = .24863 find square root of x Click here to see answer by Edwin McCravy(8909)

 Question 414454: Rewrite the expression 3 ln(2) - 2 ( ln(10) - ln(4) ) in the form ln(x), a single logarithm I rewrote it as ln(2)^3+ln(4)^2 /ln(10)^2 thus getting the the answer ln(8)+ln(16)/ln(100)=ln(24/100) I am told, however, that the correct answer is ln(128/100) Can you please explain how? Click here to see answer by stanbon(57377)
 Question 414454: Rewrite the expression 3 ln(2) - 2 ( ln(10) - ln(4) ) in the form ln(x), a single logarithm I rewrote it as ln(2)^3+ln(4)^2 /ln(10)^2 thus getting the the answer ln(8)+ln(16)/ln(100)=ln(24/100) I am told, however, that the correct answer is ln(128/100) Can you please explain how? Click here to see answer by josmiceli(9686)

 Question 414908: solve log(base a)x= 2log (base a)3+ log(base a)5 Click here to see answer by stanbon(57377)

 Question 414906: in the begining i had 1000 bugs after one day there were 1800 bugs how many bugs will i have after 3 days the formula to use is Ac=Aoekt Click here to see answer by stanbon(57377)

 Question 414912: if log A=2 and log B=3 what is the numerical value of log A square root of 3 over B^3 Click here to see answer by Gogonati(809)

 Question 414944: solve: log(base b) (x^2+7) = 2/3 log (base b) 64 Click here to see answer by Gogonati(809)
 Question 414944: solve: log(base b) (x^2+7) = 2/3 log (base b) 64 Click here to see answer by jsmallt9(3296)

 Question 414977: how do you find the domain of the log function: log base 6 (7-7x)? Click here to see answer by jsmallt9(3296)

 Question 414707: I need to combine the following into one log (base 3) ln{x{log (base 1/2)(2/(sqrt(2)))}} + log {(base 2)(5x^3)} + 3 Click here to see answer by jsmallt9(3296)

 Question 415304: What is the value of Log base 9 of number 27 Click here to see answer by sudhanshu_kmr(1152)

 Question 415314: The pH of a substance equals –log[H+] where [H+] is the concentration of hydrogen ions. [H+] for tomato juice is 10^-4. What is the pH of tomato juice? Click here to see answer by jsmallt9(3296)

 Question 415315: How does the graph of y = 2log(x + 5) compare to the graph of the parent function? Click here to see answer by jsmallt9(3296)

 Question 415427: 3 to the 2nd power x minus 1 = 3 to the third power I hope I typed that problem in right, I don't know how to put it into the actual problem format. Anyway I don't understand how to solve these. Click here to see answer by jsmallt9(3296)

 Question 415818: Hi there! Could you show me the steps to solving: log base 3 x = 4? thank you :) Click here to see answer by ewatrrr(10682)

 Question 416380: what is 4.435 rounded to the nearest hundreth Click here to see answer by MathLover1(6634)

 Question 416851: log base 2 (x-2)+log base 2(8-x)-log base 2(x-5)=3 Click here to see answer by stanbon(57377)

 Question 410461: Solve the following equations. Show your steps. If the answer is irrational, give both an exact value and a decimal approximation. 3log(3y+2) = log(3y+2) - log7 ( log(5x-6) / logx ) = 2 3^2x = 9^x+2 HELP PLEASE!!!!! Click here to see answer by lwsshak3(6513)

 Question 417305: This is a tough one. Could you please help? Trains A and B are traveling in the same direction on parallel tracks. Train A is traveling 60 miles per hour, and train B is traveling at 64 miles per hour. Train A passes a station at 3:10 P.M. If train B passes the same station at 3:40 P.M., at what time will train B catch up to train A? Thanks for your time and help! It's so greatly appreciated!! Click here to see answer by mananth(12270)