Questions on Algebra: Logarithm answered by real tutors!

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Tutors Answer Your Questions about logarithm (FREE)


Question 141503: I need to express the following into a single logarithm but I have no idea how to do this. Could someone please explain the steps to me? Thanks so much.
Log_c_K + Log_c_P

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Question 141659: I need help solving this equation. -2 log base 5 of x = log base 4 of 12.
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Question 141955: What is the value of log 1000 + 2log3 9-log5 125? Where 3 and 5 are the base perspectively.
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Question 142092: Write as a sum or difference of logarithms. Use the power rule to simplify as much as possible.
ln(cube root of (x-2) * fifth root of (x+1) all divided by (x-5)^4

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Question 142208: ln x-ln(x+7)=-1
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Question 142208: ln x-ln(x+7)=-1
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Question 142214: Assume that x is a positive number.
Use the logarithm properties to present the expression:
log(x + 5) - log x
as the logarithm of a single quantity.

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Question 142248: Solve for X
2x-3=ax

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Question 142267: Please help. Also so how the problem was solved.
Tickets for a concert were sold to adults for $3 and to students for $2. If The total receipts were $824 and twice as many adults tickets as students tickets were sold, then how many of each were sold?

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Question 142240: Hello, can someone please help?
Condense the following:
1. log3 2x+3log3 4x
2. ln72x-2 ln 2 y
Use the Chane of base formula
Log4 31
log7 100

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Question 142269: Identify the variable and write an inequality.
A. Tony is taller than 6 feet
B. The miminum speed of teh freeway is 45 mph.

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Question 142273: The US population is one-fourth China's population. If the US has 300 million people, then what is the population of China.
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Question 142274: Translate each verbal expression into an algebraic expression a. Five subtracted from a number. b. The ratio of a number and six
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Question 142289: Solve x + 4y = 12 for y. Write the answer in the form y = mx + c, where m and c are fixed real numbers.
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Question 142288: Solve the following system by the addition method 0.05x + 0.10y = 1.3 and x + y = 19
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Question 142303: 4e^x=7.2
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Question 142302: log5(9x+2)-log5(3x+8)=2
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Question 142276: Solve the following system by the addition method 0.05x + 0.10y = 1.3 and x + y = 19
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Question 142458: How would I solve this for kj?:
ln(kj/15) = 2ln(kj/60)
The answer is kj = 240, but I am unsure as to how to get there. Thanks for your help.

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Question 142519This question is from textbook Integrated Mathematics
: My finals are this week.. And I'm having trouble remembering logarithms. How do you rewrite ? Please help me, I would greatly appreciate it!This question is from textbook Integrated Mathematics

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Question 142558: A+B+A
the third A has a line on top of it.
its LAWS OF BOOLEAN...

help. its IMPORTANT.
thanks!!!!!

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Question 142728This question is from textbook intermediate algebra
: solve for x: 6^x-1=216This question is from textbook intermediate algebra

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Question 142770: We just started Log word problems,could you help me with a couple I'm having trouble with?
1) This one is titled Compound Interest
How much more interest could $500 earn in 5 years, compounded semiannually, if the annual interest rate were 5 1/2% instead of 5%?
2)This one is titled Decibel Voltage Gain
An amplifier produces an output of 17 volts when the input signal is 0.03 volt. Find the decibel voltage gain.
3)This one is titled Population Doubling Time
A town's population grows at the rate of 12% per year. If this growth rate remains constant, how long will it take the population to double?
4)This one is titled Population Doubling Time
How ling will it take the population of the town in problem #3 to triple?
5)This one is titled Richter Scale
An earthquake with a period of 1/4 second has an amplitude of 2,500 micrometers.Find its measure on the Richter scale.
Thank you in advance.I'm not good with word problems,but I'm glad that there are people like you that can help me understand them. Elle J

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Question 142795: Could someone please help me with a few log word problems?
1)An earthquake has an amplitude of 5,000 micrometers and a period of 0.2 second.Find its measure on the Richter scale.
2)An earthquake with a period of 1/4 second has an amplitude of 2,500 micrometers. Find its measure on the Richter scale.
The formula for these two problems is: R = Log A/P R - means richter scale, A- means amplitude of earthquake,and P- means length of time that it last
I thank you for your help,so much because I have a learning disability,and I'm glad this site is here to help people like me.

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Question 142731: i cannot seem to be able to find the following answer for x. i nead the exact answer. the question is (lnx^9)*(lnx)-lnx^2-7=0
Please help
regards mr hopkins

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Question 142813: 1)How do i solve LOG6 6^2?
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Question 142867: 1.) Solve for x
x=log5 4 square root symbol 25 the 4 is inside the V of the square root symbol
2.) log2 2 square root symbol (3/5)
3.) Solve log3 X = (1/81)

Hope you understand what i am trying to say as it's hard without being able to type the square root symbol.
Thanks John

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Question 143189: Tutors I need your help!! I need to graph this function f(x) =5^x
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Question 143215: ln(x-1)-ln(x+1)=ln(x+5)
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Question 143204: 3^x=40
e^0.04t=1500
please help me solve these... if possible...i need good step by step process

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Question 143244: Tutors: Express as a product
logaX^4
and

In y^5
Thank you for the help!!!!

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Question 143243: Tutors Please Help Me!!! Convert to a logarithmic equation Q^t=x
and e^-1=0.3679
Thank you

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Question 143336: Use Logarithms to answer the following questions :
1) C = 3.8^2 / 0.943
2) B = cube root of (28.6/0.987)
3) A = (cube root of (39304))/ 136
4) A = square root of ( (16.843)^0 * cube root of(18.8) )
Please help, i need help with these to prepare for an exam.
Thanks
Rebekah

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Question 143213: 3^(2x-1)=4^(x=2)
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Question 143585: Population of 280 animals decreases at an annual rate of 18%. Find the multiplier rate of exponential decay.
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Question 143592: Graph and state whether increasing or decreasing:
y=2^x
y=(1/2)^x
y=log2(x)
y=log1/2(x)

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Question 143746: 4log2 x + log2 5 = log2 405

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Question 143752: Tutors, your help please!!
Given that log, 16=1.7227 and log, 3=0.6826
find log, 48

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Question 143752: Tutors, your help please!!
Given that log, 16=1.7227 and log, 3=0.6826
find log, 48

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Question 143752: Tutors, your help please!!
Given that log, 16=1.7227 and log, 3=0.6826
find log, 48

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Question 143750: Study problems
Express as a single logarithm: 5 log, x+log, y-2log, z
thank you!

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Question 143782: Describe the transformation on the following graph of f(x)=logx. State the placement of the vertical asymptote and x intercept after the trasformation.
a)g(x)=log(x-3)
description of transformation:
Equation for the vertical asymptote:

b)g(x)=log(-x)
description of transformation:
Equation for the vertical asymptote:
x-intercept in (x,y) form




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Question 143893: 7. log2(x - 2) + 5 = 8 - log2 4
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Question 143804: IF log 6 x=3 Find the value of X
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Question 143926: write the expression as a single logarithm. 4log x-6log(x+2)
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