# Questions on Algebra: Logarithm answered by real tutors!

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 Algebra: Logarithm Solvers Lessons Answers archive Quiz In Depth

 Question 147644: Hello....I have just a couple of questions. Actually, two questions in one. What is the maximum number of intersections of the graphs of an ellipse and a parabola? An ellipse and a hyperbola? Thank you very much! Click here to see answer by Edwin McCravy(8909)

 Question 147773: log5 (to the power of 5) (x+3)+log5(big 4)=log5(big 36) once again its: log5(x+3)+log5 4= log5 36 Click here to see answer by Alan3354(30993)

 Question 147847: How would you write ln0.2=-1.6 in exponential form and how would you make e^-4=0.0183 into a logarithmic form? Click here to see answer by stanbon(57342)

 Question 147814: Suppose that the function P=12+50ln x represents the percentage of inbound e-mail in the U.S. that is considered spam, where x is the number of years after 2001. Carry all calculations to six decimals on each intermediate step when necessary. a) use this model to approximate the percentage of spam in the year 2005. I need to know all steps please. b) Use this model to determine how many years it will take (to two decimal places) for the percent of spam to reach 90% provided that the law enforcement regarding spammers does not change. My answer fo first part is P=12+3.91(4) = P=12+15.65 P= 27.65% Is this correct and the second part 90=12+50ln(x), 90=12+3.91(x), 90=15.91x, 15.91years Is this correct? Thanks for help Click here to see answer by Fombitz(13828)

 Question 147882: Express as a single logarithm, 12 + log, 45 Click here to see answer by Fombitz(13828)

 Question 147937: What are you supposed to do to solve lne^2 ? Click here to see answer by scott8148(6628)

 Question 147941: How do you write this as a single logarithm of a single argument 1/2*ln5+3*ln2 ? Click here to see answer by stanbon(57342)

 Question 148051: I am having the hardest time figuring out how to write in the exponential form of the natural base e itself in the following: ln e^2=2. If you will please also write in detail (or as much as possible), how you derived your answer, that would be great. Click here to see answer by jim_thompson5910(28595)

 Question 148322: Find the value of x in logx + 1/logx = 5/2 Click here to see answer by stanbon(57342)

 Question 148320: Write as a single logarithm: 5/6log(x) + 12log(y) - 6logx - logy Click here to see answer by stanbon(57342)

 Question 148506: Of the three method of solving a system of equations which method is most appealing? Click here to see answer by mangopeeler07(462)

 Question 148502: How do you interpret the solution of a system of equations by the corresponding graph? Click here to see answer by mangopeeler07(462)

 Question 148642: log(base6)(b^2 + 2) + log(base6)2 = 2 and log(base3)(5x+5) - log(base3)(x2 - 1) = 0 Thank You! Click here to see answer by Edwin McCravy(8909)

 Question 148690: problem: log (base 2) 35 This is what I have done: log (base 2) (5 x 7) log (base 2) 5 + log (base 2) 7 I do not know how to find the log base of 2 and the 5, and same for the base 2 and 7. On my TI-84 plus. Click here to see answer by stanbon(57342)

 Question 148826: What is the value of the given expression? 1. 2 log 1 Click here to see answer by stanbon(57342)

 Question 148831: What is the value of the expression log (2+3)? Click here to see answer by stanbon(57342)

 Question 148829: What is the value of the expression log AB^2 Click here to see answer by stanbon(57342)

 Question 148828: What is the value of the expression log (2+3)? Click here to see answer by jim_thompson5910(28595)

 Question 148834: What is the area of a trapezoid, if h=28.56 b=97.23 and b1=112.63 A=1/2h (b+b1) Click here to see answer by jim_thompson5910(28595)

 Question 148856: Suppose that \$5000 is invested at interest rate k, compounded continuously, and grows to \$6954.84 in 6 years. a) Find the interest rate. b) write the exponential growth function. c) Find the balance after 10years. Click here to see answer by ankor@dixie-net.com(15650)

 Question 148954: solve the following logarithm showing all work log(base2)(x - 2) + 5 = 8 - log(base2) 4 Click here to see answer by stanbon(57342)

 Question 149218: Find y as a function of x. The constant Cis a positive number. ln(y-3)=ln 2(x^2)+ln C Click here to see answer by Nate(3500)

 Question 149326: Please help me solve the following problem: What kind of function is even, odd, neither even nor odd, both even and odd are my choices Thank You Click here to see answer by stanbon(57342)

 Question 149400: Rewrite each expression in exponential form and determine the value of x. (a) log49 x=1/2 (b) log9 27 = x Click here to see answer by stanbon(57342)
 Question 149400: Rewrite each expression in exponential form and determine the value of x. (a) log49 x=1/2 (b) log9 27 = x Click here to see answer by jim_thompson5910(28595)

 Question 149398: Solve the exponential or logarithmic equations. (Write your final answer in BOTH exact and approximate value). (a) 6^x-3 = 2^x (b) log(5x-6) = 2log x Click here to see answer by stanbon(57342)
 Question 149398: Solve the exponential or logarithmic equations. (Write your final answer in BOTH exact and approximate value). (a) 6^x-3 = 2^x (b) log(5x-6) = 2log x Click here to see answer by jim_thompson5910(28595)

 Question 149401: 1. Divide 0.05555 by 0.0008601 2. Find the value of the expression by using logarithms - 1215^3/2 Click here to see answer by stanbon(57342)