Questions on Algebra: Logarithm answered by real tutors!

Tutors Answer Your Questions about logarithm (FREE)

Question 147527: Find H+ if Ph is 5.042.
Click here to see answer by scott8148(6628)

Question 147526: Find H+ if Ph is 5.042.
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Question 147610: ln(x+3)+ln4=ln40
Click here to see answer by jim_thompson5910(28595)

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
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Question 147935: (1=0.06/4)^4t=3
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Question 147937: What are you supposed to do to solve lne^2 ?
Click here to see answer by scott8148(6628)

Question 147938: How would you solve lnx=2 ?
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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 147940: What do you do to solve log(x^3/y)^2
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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 148113: evaluate with out a calculator: 2lne^4
Click here to see answer by vleith(2825)

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)?

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Question 148829: What is the value of the expression log AB^2
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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 149315: Please help me solve this problem:
Find the center and radius of
Thank You
Click here to see answer by Alan3354(30993)

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 149316: Please help me solve this problem:
If f(x) = x^3/x^2 -4, find f(x+2)
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 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)

Question 149409: Please help me solve the following problem:
Determine whether the graph crosses or only touches the x-axis at each x-intercept for f(x)= x(x-2)(x-4)
Click here to see answer by stanbon(57342)

Question 149413: Please help me solve the following problem:
Write log ( -9)- log( +7x +12) as a single logarithm
Click here to see answer by stanbon(57342)

Question 149457: The instructions say for each function, find f^-1. Help please, step by step. Thank you...
f(x)= 6^x-1
Also, solve each equation. Find the Exact solutions.
1/2^x = 5 the exponent is above the 2 only.
Click here to see answer by jim_thompson5910(28595)

Question 149481: Instructions say to solve and find the exact solutions. Please help with this one...
X^(4/3) = 1/16
Thank you..
Click here to see answer by jim_thompson5910(28595)

Question 149609: How would you solve: log(base 2x)+log(base 4x)+log(base 8x) = 1?
Click here to see answer by jim_thompson5910(28595)

Question 149609: How would you solve: log(base 2x)+log(base 4x)+log(base 8x) = 1?
Click here to see answer by stanbon(57342)

Question 149624: Could someone please help me with the following problem:
What would be the determinant of Dx, if Cramer's Rule is used to solve:
3x -2y = 5
2x + 5y = -3
Thank You
Click here to see answer by Alan3354(30993)

Question 149622: Could I please get assistance with the following problem:
Find the determinant of:
-4 0
1 3
the numbers are enclosed with vertical lines.
Thank You
Click here to see answer by Fombitz(13828)

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