# Questions on Algebra: Logarithm answered by real tutors!

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 Algebra: Logarithm Solvers Lessons Answers archive Quiz In Depth

 Question 518402: What is the value of x when e^(2x) = 7e^x-12 Click here to see answer by solver91311(16897)

 Question 518471: 1/3log(x)-log(10)=1 I keep coming up w/ the answer 10_9 in my home work but it says its wrong. What am I doing wrong? Click here to see answer by Gogonati(809)

 Question 518479: 3 to power of (x+2) = 3 to power x + 3 to power of 2 Click here to see answer by solver91311(16897)

 Question 517570: how do you write logx^4-2logxy^3 as a single logarithm? Click here to see answer by lwsshak3(6522)

 Question 519070: The half-life of 234U, uranium-234, is 2.52 105 yr. If 98.2% of the uranium in the original sample is present, what length of time (to the nearest thousand years) has elapsed? explain in deatil how to get this solved? Click here to see answer by ankor@dixie-net.com(15661)

 Question 519210: log subscript 2 times 24 - log subscript 2 times 3 = log subscript 5 times x 24/3 = 6 Click here to see answer by stanbon(57395)

 Question 519992: Hi! I'm working on this problem. Find the domain and range of f(x)=ln((x^2)-9) I've worked out that the domain, in interval notation, is (-∞,-3) U (3,∞) which I'm pretty sure is correct. However, I can't work out what the range should be in interval notation because of the infinities. Any help would be appreciated! Click here to see answer by lwsshak3(6522)

 Question 520571: Change the logarithmic expression to an equivalent expression involving an exponent. log3(1/9)= -2 Click here to see answer by jim_thompson5910(28598)

 Question 520597: solve the equation. 6 ln 9x = 12 Click here to see answer by edjones(7569)

 Question 519899: Determine the principal P that must be invested at rate r, compounded monthly, so that \$500000 will be available for retirement in t years. r=7.5%, t=20 Click here to see answer by lwsshak3(6522)

 Question 518018: how to solve for each of these logs: 4^ln(3x+2) = 13 12^e0.03x = 15^e0.01x Click here to see answer by lwsshak3(6522)

 Question 521308: 2^(x+1) = 9x (The x+1 is a power) Click here to see answer by richard1234(5390)

 Question 522231: When there is x-2 written small next to a number like 2 what is X? Click here to see answer by syberlazer(5)

 Question 522634: log (base b) (5x-4) = 7. Solve for x, leave in terms of b. Click here to see answer by jim_thompson5910(28598)

 Question 522987: solve for x: Log base 10(log base 2(log base4 x))= 0 Click here to see answer by lwsshak3(6522)

 Question 522955: How do I express this as a single logarithm ? 1/7ln(x + 2)^7 + 1/2(ln x − ln(x2 + 3x + 2)^2) Click here to see answer by lwsshak3(6522)

 Question 521691: express log[b]3-log[b]4+2log[b]5 as the logarithm of a single number Click here to see answer by lwsshak3(6522)

 Question 523269: Hi, I was just wondering what the graph of y=log(base x)n would look like, where n is a positive integer, for example n=10. I was thinking it would have vertical asymptotes at x=-1, x=0 and x=1 because effectively you are plotting x^y=10 and x couldn't be those values. Then between -1 Click here to see answer by Alan3354(30993)

 Question 523270: . . Then for x between -1 and 1, y would be negative? But I am unsure about when because wouldn't the values for y need to be positive even integers for (-x)^y to be positive? I think I might be getting myself a little confused, I would appreciate any help or advice. Thank you. Click here to see answer by Alan3354(30993)

 Question 523624: use log 2=.301, log 3= .699 to compute log (1/20) to the nearest three decimal places. Click here to see answer by Alan3354(30993)
 Question 523624: use log 2=.301, log 3= .699 to compute log (1/20) to the nearest three decimal places. Click here to see answer by stanbon(57395)

 Question 524071: Use the properties of logarithms to condense each logarithmic expression. Write the expression as a single logarithm whose coefficient is 1. the problem: log base 8 (x+5)+1/3 log base 8x Click here to see answer by stanbon(57395)