Questions on Algebra: Logarithm answered by real tutors!

Tutors Answer Your Questions about logarithm (FREE)

Question 169553: evaluate the expression
2^(log2^3)
Click here to see answer by Alan3354(30993)

Question 169553: evaluate the expression
2^(log2^3)
Click here to see answer by jim_thompson5910(28595)

Question 169939: Express a single logarithm and simplify
log a 10,000-log a 100
Click here to see answer by Alan3354(30993)

Question 169939: Express a single logarithm and simplify
log a 10,000-log a 100
Click here to see answer by stanbon(57377)

Question 169977: log 18 to 68.3 its multiple choice and need to evaluate to 4 decimal place

Click here to see answer by nerdybill(6962)

Question 170034: The question is rewrite the following expression using one or more properties of logarithims and evaluate without a calculator.
log4- log 400,000=
I have searched and cannot find any examples of how to solve this problem. Thank you for your help, Jackie
Click here to see answer by stanbon(57377)

Question 170088: The questions are rewrite the following expression using one or more properties of logarithims and evaluate without a calculator.
1. log 5 (25 2/5 -)=
Plese check and see if this is correct. log5 25 2 - log5 5, 2 log5 25- log5 5, 2x2-1= 4-1=3
2. log5 125 + log5 5=
I was able to figure out a portion of the problem but then got lost. Please check and help me with the rest. log5 (125x5)= log5 625 ( this is where I got lost)
3. log9 3 - log9 243=
I think I figured out a portion of this problem as well, but then got lost. Please check and help me with the rest. log9 3/243 reduced to log9 1/81,
log9 81 ( this is where I got lost)
Click here to see answer by stanbon(57377)

Question 170105: log5 (25^2 divided by5 -)=
Rewrite the equation using one or more properties of lagarithims and evaluate without a calculator.
Click here to see answer by jim_thompson5910(28595)

Question 170138: 90) 3^2x -8 . 3^x +15=0
94) If x= (log125 5)^log5 125
Please help me to solve this two. Thank You

Click here to see answer by jim_thompson5910(28595)

Question 169502: condense the expression log 3+ 1/2 log x-log 5
Click here to see answer by Ploy(1)

Question 170044: 1.find the domain of the function f(x) = ln (8x-24)
2. simplify log (1/10)
3. write as a single logarithm and simplify (no decimal approximations)
2 log 6 + log x - log 2
4. expand and simplify (no approximations: ln(ex)
Click here to see answer by ankor@dixie-net.com(15658)

Question 170357: ln e = ?
I'm not sure it's 1
thank you
Click here to see answer by checkley77(12569)

Question 170375: Kindly explain how to resolve the following logarithmic equation
1) 1 - log (x - 2) = log (3x + 1)
Thanks so much!!!
Click here to see answer by Earlsdon(6287)

Question 170375: Kindly explain how to resolve the following logarithmic equation
1) 1 - log (x - 2) = log (3x + 1)
Thanks so much!!!
Click here to see answer by Alan3354(30993)

Question 170381: Solve the following equation. Show all your work.
logx=-2
Click here to see answer by stanbon(57377)

Question 170403: Solve the following equation. Show all your work.
logx(10-3x)=2
Click here to see answer by nerdybill(6962)

Question 170409: Solve the following equation. Show all your work.
2log9(2x+5)-1=0
Click here to see answer by Alan3354(30993)

Question 170415: The Ehrenberg equationgive the relationship between height h(in inches)and the average W (in pounds)for children between 5 and 13 years old.
W = 5.2911e^.0467h
Find the average weight of a child who is 4 feet 6 inches tall.

What height would correspond to an average weight of 107 pounds?
Click here to see answer by midwood_trail(310)

Question 170477: Solve:
log(x+7)=1-logx
Click here to see answer by stanbon(57377)

Question 170478: Solve the logarithmic equation:
log5x=log6 + (x+6)
Click here to see answer by stanbon(57377)

Question 170476: Solve: log base2 (x^2-203)=5
(log base 2 x squared minus 203 equals 5)
Click here to see answer by grnkbul(2)

Question 170476: Solve: log base2 (x^2-203)=5
(log base 2 x squared minus 203 equals 5)
Click here to see answer by stanbon(57377)

Question 170492: log 10 5 + 3 log 10 25 =
Click here to see answer by stanbon(57377)

Question 170498: log5(X-4)= 2-log5(14-X)
Click here to see answer by stanbon(57377)

Question 170597: ln (y^2-1)= ln(y-1) + ln5
Click here to see answer by nerdybill(6962)

Question 170596: 2^x+1=1/16
Click here to see answer by Alan3354(30993)

Question 170623: log5(5X/x-2) = 2
Click here to see answer by stanbon(57377)

Question 170635: e^4X-e^2X-6=0
How do I solve for X using natural logs?

Click here to see answer by stanbon(57377)

Question 170835: Solve the equation by isolating the natural logarithm and exponentiating both sides. Express the answer in terms of e.
ln 'square root'(x+9)=9
Click here to see answer by Alan3354(30993)

Question 170743: Write the expression as the sum and/or difference.
log base3 (xsquared+2x+1), x>0
_______________
(xsquared)

Click here to see answer by KnightOwlTutor(293)

Question 170821: please help me solve this equation log(x) + log(x - 90) = 3
Click here to see answer by KnightOwlTutor(293)

Question 170873: explain why the graph y=log (x) contains the points (1,0) no matter what b is.
b
Click here to see answer by KnightOwlTutor(293)

Question 170940: Write the log expression in exponential form.
Log x = y
No work to show.
I understand this but do not know where to start, please help!
Click here to see answer by jim_thompson5910(28595)

Question 170942: Express as a single logarithm with a coefficient of 1.
2 ln x – 5 ln y
No work to show.
Not sure on this, please advise!
Click here to see answer by jim_thompson5910(28595)

Question 170941: Solve for x.
Log2x = 6
Show your work here:
I have a B and class is almost over, but this is over my head where to start!
Click here to see answer by jim_thompson5910(28595)

Question 170945: Write the logarithm in expanded form.
log 3(x^2y)^3

No work to show.
Not sure how to format this on the computor, the first three is a small 3 before the equation. Please help if possible, thanks!

Click here to see answer by jim_thompson5910(28595)

Question 170951: Please show the step-by-step solution to:
Prove [(log7)4][log4)9]= [(log7)9]
Textbook hint: start by dividing each side by [(log7)4].....
Thank you!
Click here to see answer by jim_thompson5910(28595)

Question 170998: 3^x-2 = 1/9
So far I have x-2 log 3 = log 1/9
I am not sure if this is even correct.
thanks
Click here to see answer by jojo14344(1512)

Question 171031: ln(5x-2)=12
not sure how you work this one please advise
thanks

Click here to see answer by Earlsdon(6287)

Question 171030: 4^x+5 = 6
so far I have
log 4^x+5 = log 6
(x+5)log 4 = log 6
not sure where to go from here, any help is appreciated
thanks
sherry
Click here to see answer by Earlsdon(6287)

Question 171052: Can you help me with this question? condense: log3-log4-log7
To me, i think the answer is: but i'm not sure if it is right
Click here to see answer by Alan3354(30993)

Question 171052: Can you help me with this question? condense: log3-log4-log7
To me, i think the answer is: but i'm not sure if it is right
Click here to see answer by solver91311(16897)

Question 171046: how do you condense a problem like ?
Click here to see answer by solver91311(16897)

Question 171002: log2(6x+3)=4
Click here to see answer by Alan3354(30993)

Question 171127: log 3 x= log 5 + log (x-4)
Click here to see answer by solver91311(16897)

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