# Questions on Algebra: Logarithm answered by real tutors!

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 Algebra: Logarithm Solvers Lessons Answers archive Quiz In Depth

 Question 474229: i need help solving this for x please.. i dont even know where to start where ln is meant to be natural log Click here to see answer by Edwin McCravy(8909)
 Question 474229: i need help solving this for x please.. i dont even know where to start where ln is meant to be natural log Click here to see answer by solver91311(16897)

 Question 474317: Having problem finding range domain and graphing this log[3]x-2 Click here to see answer by stanbon(57377)

 Question 474483: In a scientific calculator the base for a lagarithm equation is 10 by default. How to change the base? Please explain elaborately. Click here to see answer by Theo(3464)
 Question 474483: In a scientific calculator the base for a lagarithm equation is 10 by default. How to change the base? Please explain elaborately. Click here to see answer by richard1234(5390)

 Question 474684: How do you write 3.15(5 is repeating decimal) as a fraction? Click here to see answer by MathLover1(6634)

 Question 474675: solve 2log3 +log2x = log(3x+1) Evaluate 2logbase2 4 +3logbase2 5 -log-log2 25-log2 10 Click here to see answer by stanbon(57377)

 Question 474690: Write the repeating decimal 3.15555555 as a fraction? Click here to see answer by MathLover1(6634)

 Question 475029: Use properties of logarithms to solve the equation log(base3)y – log(base3)7 = log(base3)2 Click here to see answer by nerdybill(6962)

 Question 475057: Use properties of logarithms to solve the equation log(base3)x + log(base3)(x + 2) = log(base3)2 + log(base3)12 Click here to see answer by ankor@dixie-net.com(15658)

 Question 475055: Use properties of logarithms to solve the equation log(base4)(x+2)= 1/3log(base4)64 Click here to see answer by ewatrrr(10682)

 Question 475234: I am in college algebra online and we have a study sheet of problems which we need to know how to solve one similar. The one I am having trouble with is (1+r)^4=3.6 I had started by factoring but I was lost at what to do after I factored it out. I have r^4+4r^3+6r^2+4r+1=3.6 then subtracted 1 to get r^4+4r^3+6r^2+4r=2.6 now I am stuck. Thank you in advanced. Click here to see answer by Alan3354(30993)
 Question 475234: I am in college algebra online and we have a study sheet of problems which we need to know how to solve one similar. The one I am having trouble with is (1+r)^4=3.6 I had started by factoring but I was lost at what to do after I factored it out. I have r^4+4r^3+6r^2+4r+1=3.6 then subtracted 1 to get r^4+4r^3+6r^2+4r=2.6 now I am stuck. Thank you in advanced. Click here to see answer by Edwin McCravy(8909)

 Question 475420: Solve: *Please answer as soon as possible bro. Plus, I don't think this question has a solution so please just show the working :) =) Click here to see answer by richard1234(5390)

 Question 475427: I am trying to solve 6ln(x+8)-4lnx Can you help me solve this Click here to see answer by rfer(12666)

 Question 475704: Find a counterexample for statement. 2^n+3^n is divisible by 4 the key n = 3 Click here to see answer by Alan3354(30993)

 Question 475735: how do you solve each for the x variable? 1.) 1/4=8^x+3 2.) 27^x+1=9^2x-4 Click here to see answer by Alan3354(30993)

 Question 475739: solve each for x in each: 1.) log base 3 of 9 = x 2.)log base x of 8 = 3/2 3.)log base a of x = 3 4.)ln e^x = 4 Click here to see answer by ewatrrr(10682)

 Question 475740: y=2+log base 3 of(x-1) 1.) find the domain 2.)find the x-intercept Click here to see answer by lwsshak3(6516)

 Question 474848: i need help solving this and the steps logx-1=-log(x-9) and also log(1-x)+logx+log(x+4) Click here to see answer by lwsshak3(6516)

 Question 475862: Help,Please! take me for ever solve this problem,thanks in advance http://imageshack.us/photo/my-images/851/page672.jpg/ I need help number 7 and 19 the key number 7 , n=3 the key number 19 , n=3 Click here to see answer by MathLover1(6634)

 Question 475921: How much principal, to the nearest dollar, should you invest at 4% in order to have \$3,000 for a vacation to Europe in 3 years? PLZ Solve this application using logarithms Thank You In Advance! Click here to see answer by stanbon(57377)

 Question 475865: Counterexample Help,Please! take me for ever solve this problem,thanks in advance I attach lesson http://imageshack.us/photo/my-images/8/page671.jpg/ http://imageshack.us/photo/my-images/851/page672.jpg/ I need help number 7 and 19 the key number 7 , n=3 the key number 19 , n=3 Click here to see answer by richard1234(5390)

 Question 475318: http://imageshack.us/photo/my-images/508/page668.jpg/ I need help number 39,40 the key 39 is 500 Thank you Click here to see answer by richard1234(5390)

 Question 475959: Supose an amoeba divids into two amoebas one every hour.How long would it take for a single amoeba to become acolony of 4096 amoebas? the key is 12 hours Page 673 Click here to see answer by josmiceli(9695)

 Question 475999: solve each: (Can you please provide steps. i would really appreciate it. It would help me to better understand.) 1.) log base (x+2) of 16 = 4 2.) log base 3 of x + log base 3 of (x-2) = 1 Click here to see answer by Tatiana_Stebko(1326)

 Question 475998: solve each for x : ( Can you please provide steps and explanations. Thank you) 1.) 1/4=8^(x+3) 2.) 27^(x+1)=9^(2x-4) solve for x in each: ( Can you pleas provide steps and explanation. I would really appreciate it. It would help me to better understand the process in obtaining the answers.) 1.)log base x of 8 = 3/2 2.)log base a of x = 3 3.)ln e^(x)= 4 Click here to see answer by lwsshak3(6516)

 Question 476213: a. Solve for x b. Rewrite the answer so that each individual logarithm from part a is written as a sum or difference of logarithms of prime numbers Click here to see answer by Tatiana_Stebko(1326)

 Question 476286: According to Johannes Kepler's third law of a planetary motion,the radio of square of a planet's period of revolution around the Sun to the cube of its mean distance from the sun is constant for all planets. Verify that this is true for at least three planers. Page 470#41 Click here to see answer by Alan3354(30993)

 Question 476506: I need to solve the following exponential equation. (x-3) 5 =137 I cannot figure this problem out for the life of me. Please help, Thank you. Click here to see answer by jim_thompson5910(28595)