211 Answered Questions for the topic Logarithm

Logarithm Algebra 2

09/29/19

Logarithm in x^y = y^x?
Since log (a^b) = b log a, shouldn't I be able to take the log of both sides of x^y = y^x, and get: x log y = y log x --> x = (y log x)/log y? I have plugged in values however, and it doesn't... more
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09/16/19

Express the logarithm in terms of ln 2 and ln 7: ln(49/8)
ln 2ln 7ln(49/8)
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08/05/19

Find the accumulated value of an investment
Find the accumulated value of an investment of $10,000 for 7 years at an interest rate of 4% if the money is a. compounded semiannually ; b. compounded quarterly ; c. compounded monthly ;... more
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Logarithm Algebra 2

07/31/19

Logarithm question
Given that logaC - logax = 5/3, express x in terms of a and N, giving answer in a form not involving logarithms.
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Logarithm Math

07/31/19

Math logarithm word solving problem
The mass of a radioactive sample is given by M(t)= M°10^ -k•t, where t is the time in years, M° is the initial mass, and k is a constant. if 400 grams of this material decays to 40 grams I. 10... more
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Logarithm Precalculus

07/31/19

Math logarithms

The population, P, of prairie dogs increases according to the equation P= 2250e^r•t, where t is the number of years, and r is the rate of growth. Write the equation for r?
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Logarithm Algebra 2

06/19/19

9^(2x+4)=26.3^(2x+3)+3
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06/16/19

how do u make y the subject of x=log₄y
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06/05/19

How would I solve a system of equations that involve logs?
I'm encountering a problem with solving this system where I can't quite figure out what direction I should be going to start this off. Here are the equations. (logx)(logy) - 3log5y - log8x =... more
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Logarithm Math

06/05/19

Math Logarithms

The equation 7.35 = 14.7e– 0.0429h can be solved to determine the elevation, h, in thousands of feet, where the air pressure is expected to be 7.35 pounds per square inch.Find this elevation, h, in... more
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Logarithm Maths

06/02/19

Maths logarithms

Log3x - log2x - 6logx =0
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Logarithm Algebra 2

05/23/19

Write an equation to model the situation
Sarah is buying a new computer. She pays $800 with a credit card that charges 12.4% interest compound monthly.
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05/16/19

Can someone help me condense this logarithm?
(6log x + log y + 24 log x) - (log z + 1/7 log h + log g)
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Logarithm Math Algebra 2

05/15/19

Condense the logarithm
(12 log x + 4/5 log y + 3 log x) - (log z + 2/5 log h + 8/5 log g)
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Logarithm Math Algebra 2

05/15/19

The decay of 242 mg of an isotope is given by A(t) = 242e....
The decay of 242 mg of an isotope is given by A(t) = 242e^-0.017t, where t is time in years. Find the amount left after 72 years. Please help! I missed 3 months of school because of health problems... more
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Logarithm Math Algebra 2

05/15/19

How do I describe the movement, relative to the graph of the indicated function?
This is in the exponential and logarithmic part of my textbook. f(x) = ln x - 6; relative to f(x) = ln x
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Logarithm Math Algebra 2

05/15/19

How do i find this exponential function?! Initial Value = 31, increasing at a rate of 13% per year
I need to find the exponential function that satisfies the given conditions. Initial value = 31, increasing at a rate of 13% per year
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Logarithm Math Algebra 2

05/15/19

How do I find the exact solution to this equation?
Hi! Can you help show me how to solve this? log5(x-2) = -1
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Logarithm Math Algebra 2 Algebra

05/03/19

Solve the following logarithmic equation
2log(base 3)(x-4)+log(base 3)3=3
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Logarithm Algebra 2

04/23/19

Earthquake intensity
How much more energy (intensity) does a 8.5 M earthquake have compared to I0m=log (I/I0)
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Logarithm Algebra 2

04/23/19

50 = 98.19ln(x) - 540.53 how to calculate X?
Im trying to measure IC50 in a log graph. the equation is the y = 50, so how to calculate X?
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Logarithm Algebra 2

04/16/19

how do you solve 2 8/10
I need to learn how to solve the answer i don't understand
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Logarithm Algebra 2 Algebra

04/10/19

solve the following equations for y

log2(15 y+12) = 8x7+7 2e2 y−4 = x5−3
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Logarithm Precalculus

03/31/19

log10(x+2) + log10(x) - 1 = log10(3/2)
How do you solve this equation for x?I tried the followinglog10(x+2) + log10(x) - 1 = log10(3/2)log10(x+2) + log10(x) - log10(10) = log10(3/2)log10((x+2)*x / 10) = log10(3/2)(x+2)*x / 10 =... more
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Logarithm Algebra 2

03/19/19

How do I solve this problem?
Solve for x ln(x+5)=ln(x-9)-ln(x+9)
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