445 Answered Questions for the topic Logarithms

Logarithms

12/03/14

welders log question
Welders use a logarithmic scale to identify protective eyewear. The shade number, n, is given by the equation n=1-(7logT)/3, where T is the fraction of visible light that the glass... more
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Logarithms

12/03/14

intensity of light log question
The intensity, I, of light, in lumens, passing through the glass of a pair of sunglasses is given by the equation I(x)= I∨0 (0.8)^x, where x is the thickness of the glass, in millimetres, and I∨0... more
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Logarithms

12/02/14

Given that f(x)=1/(sqr(1-x) and f(a)=2, waht is the value of f(1-a)?
This is part of the logarithm chapter.   How to get 2/√3 as the answer?
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Logarithms

12/02/14

Log question
Given that e and f are integers, both greater than one, and √(e(√e(√e)=f, determine the least possible value of e+f.                                                                                ... more
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11/30/14

Exponential Growth
A colony of bacteria grows exponentially. The colony begins with 4 bacteria, but 4 hours after the beginning of the experiment, it has grown to 27 bacteria.   1.) Give a formula for the number of... more
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Logarithms Math

11/30/14

Logarithms
Solve the equation if possible. Give the exact solution if there is one.  log(x-6)+log(x-8)=log195
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Logarithms

11/28/14

Log question
For what value(s) of x does log2(log3(log4x))=0?How to get an answer of x=64?
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11/13/14

Richter Scale
Oklahoma has been experiencing an increase in earthquakes over the last few years. What was the magnitude on the Richter Scale, R=log(I/I_o), of the following two earthquakes occurring in the... more
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Logarithms

11/12/14

solve : 3^x+3 = 9^x-2
its a logarithm equation
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11/11/14

Give a counterexample to the claim log (s/t) = log s/ log t
Give a counterexample to the claim log (s/t) = log s/ log t
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11/05/14

how do I solve for x in the equation: 2/3 = ln2x
please show working and also explain why you do it how you do it. Thanks! :)
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Logarithms

10/19/14

5log(25-x2)-(log(5+x)+log(5-x))=log( )
Using laws of logarithms, write the expression below as a single logarithm. 5log(25−x^2)−(log(5+x)+log(5−x))=log( )
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Logarithms

10/18/14

log (x^2)+log (x^4) / log(100x) = 2
Just need to what x is equal to and how
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Logarithms

09/26/14

1/2log25 + 2/3log8 - 1/4log16 all to base 10. How do we work this out? Answer is 3/2, but I keeo getting 10
1/2log25 + 2/3log8 - 1/4log16 all to base 10. How do we work this out? Answer is 3/2, but I keeo getting 10
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Logarithms Math Ib

09/24/14

Log2 x = logx 2
Logbase2 of x = logbasex of 2    
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Logarithms

09/06/14

How to solve for x
what is x if log underoot (x) 2 = 1/2?
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08/18/14

Calculus logarithm question
Log x + log (x+15) = 2   How is this solved?
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08/14/14

Usethe properties of logarithims to write the expression as a single logarithim, if possible:
2loge4x^4 - 1/6 loge(4x+9)   Note: "e" is that special number 2.718 and I do not have a proper calculator to figure ln or common logs
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08/14/14

Solve 3(10x) -1 = 23
Please show all steps. I do not have a proper calculator   If the answer is not an integer, enter it as a decimal rounded to the nearest, hundredth if needed
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08/14/14

Solve (8)^x - 4^3-x = 0
Please show all steps. I do not have a proper calculator.   if the answer is not an integer, enter it as a decimal rounded to the nearest hundredth, if needed
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08/14/14

Solve 3+3e^3-x/6 +5=11
Please show steps as I do not have a proper calculator. If the answer is not an integer, enter it as a decimal to the nearest hundredth, if needed.   Note that "e"= that special number 2.718
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Logarithms

07/25/14

rewrite this expression in terms of x and y: if x=ln(A) and y=ln(B), the ln(A)/ln(B)=
rewrite this expression in terms of x and y if x=ln(A) and y=ln(B) then ln(A)/ln(B)=
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07/09/14

This is a question of floors and logarithms and bases and cabbages and kings and why the sea is boiling hot and whether pigs have wings.
Ok the literary reference is possibly not part of this question.  Is there a function to make x into the highest multiple of 8 the is lower than or equal to x? For instance, 13 would become 8,... more
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Logarithms

06/12/14

how to find the antilog of -13.599
how to find the antilog of -13.599.
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06/05/14

how do you graph and solve logarithmic and exponential equations
Solving   3e^(-2x)=12   2^(x+1)+3=9   2+ln(x+3)=13   Graphing   2+log2(x+1)   -log1/2x   -2+ln (x-3)   2^(x+1)-3   log2(x+2)+4  
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