Questions on Algebra: Logarithm answered by real tutors!

Tutors Answer Your Questions about logarithm (FREE)

Question 171126: Ln x - Ln(x-9)=Ln 9
Click here to see answer by oscargut(891)

Question 171125: log5(x+7)+log5(x-7)=2
Click here to see answer by KnightOwlTutor(293)

Question 171164: solve the logarithymatic equation. Express irratiional solitions in simplist radical form.
log(x+1)-log(x+5)=log1/x
Click here to see answer by stanbon(57361)

Question 171163: evaluate the expression.
11^(log11)5
Click here to see answer by stanbon(57361)

Question 171162: Find the effective yield, to the nearest hundreth percent, of an investment at 6% coumpounded continuesly?
Click here to see answer by stanbon(57361)

Question 171161: solve the equation.
5^7-x=125
Click here to see answer by stanbon(57361)

Question 171204: given that loga2= 0.693, and loga11= 2.398, find loga 1/22

given that log x = 3 and log y = 6, find log xy2
Click here to see answer by oscargut(891)

Question 171237: It asks to write it in condensed form:
logb 3 x + 8(logb x - logb y)

1/2loga x + 4 loga y - 4 log a x
Click here to see answer by stanbon(57361)

Question 171215: Solving the following equations, which shows the correct answer?
A) log10 (0.1) = 1
B) log16 2 = 4
C) log 3 9 = 2
D) log5125 = 25

I am stumped!
Click here to see answer by scott8148(6628)

Question 171211: Write the exponential expression in logarithmic form.
b^y = c
If anyone is able to help, I appreciate it :)

Click here to see answer by scott8148(6628)

Question 171207: #1.$480 at 10% compounded quarterly for 5 years

#2. $800 at 2% compounded continuously for 8 years
Click here to see answer by midwood_trail(310)

Question 171456: log6 60 - log 60 6
Click here to see answer by stanbon(57361)

Question 171462: Ethanol production (in billions) of gallons) is produced by f(x) = 1.47(1.225^x) where 0 corresponds to 2000. If this trend continues, estimate the year in which ethanol production reaches 12 billion gallons.
Click here to see answer by stanbon(57361)

Question 171516: Please help me!
3. Simplify the following expressions:
a. X4 * X5
b. Z9/Z10
c. log3Y + log3Z
d. log5Y - log5Z
Click here to see answer by solver91311(16897)

Question 171514: Please help!
2. Convert the following equations into exponential form:
a. X = log38
b. -9 = log5Y
c. X= log6Y
d. 100 = log2Z
Click here to see answer by solver91311(16897)

Question 171513: Please help!
1. Convert the following equations into logarithmic form:
a. 6 = 2x
b. 9 = 6y
c. 7 = 3y
d. X = 5y
Click here to see answer by solver91311(16897)

Question 171542: log5^x-log5^9
Click here to see answer by Alan3354(30993)

Question 171558: log12^x=1
solve for x
Click here to see answer by jim_thompson5910(28595)

Question 171558: log12^x=1
solve for x
Click here to see answer by stanbon(57361)

Question 171547: log5^x-log5^9
Click here to see answer by jim_thompson5910(28595)

Question 171557: solve for x
8^x+1= 19
Click here to see answer by solver91311(16897)

Question 171557: solve for x
8^x+1= 19
Click here to see answer by stanbon(57361)

Question 171549: 6^x=15
Click here to see answer by midwood_trail(310)

Question 171560: find x
7^x = 4^x+1
that you do this but i dont know how find x
log7^x=log4^x+1
xlog7=xlog4+1log4
x(log7-xlog4)=1log4
x= 1log4/log7-log4
Click here to see answer by stanbon(57361)

Question 171546:
3^+2=1/729

Click here to see answer by stanbon(57361)

Question 171567: evalute
log4^9
that hiw i did not right
log 4^9=x
4^x=9
xlog2^2=3^2
xlog2=log3
xlog2/log3
x=
Click here to see answer by Alan3354(30993)

Question 171594: what would log3 28 be and use log6 3= 0.1613147 and log6 5=0.898244 to find log6 45.
Click here to see answer by Alan3354(30993)

Question 171594: what would log3 28 be and use log6 3= 0.1613147 and log6 5=0.898244 to find log6 45.
Click here to see answer by nerdybill(6962)

Question 171757: Solve 5^x=23. Give answer to the fourth decimal place.
Click here to see answer by Alan3354(30993)

Question 171651:
Click here to see answer by Alan3354(30993)

Question 171900: We are trying to help my friends son start to solve the following equation prior to graphing: f(x)=log3(x-1). How do you set the problem up to solve? Perhaps the first 3 steps would help us remember since it has been 30 years since we took college algebra. Not in book.

Click here to see answer by Alan3354(30993)

Question 171943: how do you solve: log3(4x+1)=log3(5x-2), the 3's are the base numbers
Click here to see answer by stanbon(57361)

Question 172047: Hi,
I am having a problem solving:
log(z^2-25)-log(z+5)=log7
The farthest I got was to re-write the problem to: log(z^2-25)(z+5)=7
Click here to see answer by solver91311(16897)

Question 172047: Hi,
I am having a problem solving:
log(z^2-25)-log(z+5)=log7
The farthest I got was to re-write the problem to: log(z^2-25)(z+5)=7
Click here to see answer by Alan3354(30993)

Question 172041: solve: log5(3x+1)=log5(2x+7) the 5's are bases
Click here to see answer by Alan3354(30993)

Question 172051: I have trouble with
(log2 3x)*(log5 x)=3
This problem comes from an old mimeographed practice sheet.
Click here to see answer by Alan3354(30993)

Question 172077: Please solve log base 2^(x-2)=logbase2^(x-4)
Click here to see answer by Alan3354(30993)

Question 172077: Please solve log base 2^(x-2)=logbase2^(x-4)
Click here to see answer by stanbon(57361)

Question 172122: how do I go about solving this type of problem? 3LOG(4x-1)=2.1
Click here to see answer by stanbon(57361)

Question 171517: Can someone please help me!
4. You have $760,000 in your bank account. The interest rate in your account is 5%. Solve for the following:
a. How much interest will you accumulate if interest is compounded annually over the next five years?
b. How much interest will you earn in your account over the next five years with continuous compounding?
You can use a scientific calculator or the =Exp() function in Microsoft Excel.
Click here to see answer by Baron(1)

Question 172177: simplify ln e^17

Click here to see answer by jim_thompson5910(28595)

Question 172189: use natural logarithms to solve for x
32^x=200
Click here to see answer by jojo14344(1512)

Question 172175: write in exponential form log3 49=x
log with a base of 3 49 = x
Click here to see answer by Alan3354(30993)

Question 172450: 1ne -2
log5 125
log 1/10
log (0.01)3rd

Click here to see answer by stanbon(57361)

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