Questions on Algebra: Logarithm answered by real tutors!

Tutors Answer Your Questions about logarithm (FREE)

Question 275203: ln(x+4)-ln (2x+1)= ln5

Click here to see answer by dabanfield(803)

Question 275180: Can you help me write in terms of x and y if , and ? Thanks!
Click here to see answer by jsmallt9(3296)

Question 275464: Solve for x: log(x-2)+ log x = log 3
Click here to see answer by edjones(7569)

Question 275465: I am supposed to graph [e^x=9 for x ]on my graphing calculator. I put the brackets around the problem, they are not actually part of the problem. I thought it might make it easier to get help with it. I have the TI-Nspire. On the TI-Nspire keypad it is quite easy to enter it, but I cannot figure out how to enter it on the TI-84 which is what we use in class. How do I enter e^x on Y1? Y2 is 9, so that one is easy, but I am trying to figure out how to enter e^x on Y1 on the TI-84 keypad. It comes out as e^x(. Thank you....
Click here to see answer by ankor@dixie-net.com(15745)

Question 275646: please help me graph this equation. F(x)=log base 3 of (x-1)
Click here to see answer by solver91311(17059)

Question 275650: The solution for x of the equation log(base x)2 + log(base x^2)3 = 10 can be written in the simplified form (index a, radicand b). Find b - a.
Help! I don't understand what this question is asking or how to solve it step by step.
Click here to see answer by jsmallt9(3296)

Question 275956: Can you help me solve for x in the equation ? Thanks!
Click here to see answer by jsmallt9(3296)

Question 275957: Can you help me simplify ? I believe it's , but I'm not sure. Thanks!
Click here to see answer by jsmallt9(3296)

Question 276097: How can I calculate the difference in intensity between a 7.1 earthquake and an 8.8 earthquake? These numbers refer to the Richter scale of course.
Click here to see answer by solver91311(17059)

Question 276226: how many digits are in base 16
Click here to see answer by Alan3354(31487)

Question 276225: 16,a,b,c,60 find a,b,c in the arithmetic sequence?
Click here to see answer by solver91311(17059)

Question 276182: Evaluate the logarithm:
log4^1/4
Click here to see answer by jim_thompson5910(28696)

Question 271047: Write in logarithmic form:
{4/11}^3= 64/1331
Click here to see answer by Alan3354(31487)

Question 276461: Could some please help me out
log5(3x-1)=1 Do you bring the 3x-1 to the left for the first step?

I did this other problem is the answer correct?
log x+ log(x-3)=1
x^2-3x-10=0
x=5??
Click here to see answer by jsmallt9(3296)

Question 276446: Suppose that $7000 is invested at an interest rate of 5.8% per year, compounded continuously. What is the balance after 9 years?
I need a detailed explanation please! Thank You!
Click here to see answer by jirehcwe(1)

Question 276532: hi my question says solve for x but now iv never seen a log equation with a base of x.
1.1 log(base x)^8=3-log(base x)^125

Click here to see answer by stanbon(57940)

Question 276539: i have never seen a log with a base of x
solve for x:

Click here to see answer by Alan3354(31487)

Question 276550: Please help. Solve for x. logx 8=3-logx125
Click here to see answer by Alan3354(31487)

Question 276346: find the logarithm using the change of base formula
log200 20 base is 200
Click here to see answer by jsmallt9(3296)

Question 276571: h(x)=ln(x^3)+4 ln x
Click here to see answer by jsmallt9(3296)

Question 276732: 3log27 8
Base is 27 exponent is 8
Click here to see answer by user_dude2008(1861)

Question 276770: I cannot figure out the solution to this problem i have been trying for days assistance would be very much appreciated please

1.) solve for x: log_4(x^2+3x)-log_4(x+5)=
-im not sure if i divide or subtract or pretty much anything that im suppose to do i cannot figure it out
Click here to see answer by josmiceli(9817)

Question 276590: Please help me with these questions ASAP!!
Suppose that f(x)=log3(x-1)
a)If f(6)=1.4 and f(8)=1.7,then evaluate log3(35) and log3(7/5).
b)If f(3)=0.6, find log9(2).
Click here to see answer by jsmallt9(3296)

Question 277134: Please simplify and express as a single logarithm;
1/2 log b + 9 log c
Click here to see answer by CharlesG2(828)

Question 277168: Write the equation in its equivalent logarithmic form.
root3:(64)=4
Click here to see answer by jim_thompson5910(28696)

Question 277216: Use properties of logarithm to expand the logarithmic expression as much as possible. Where possible, evaluate logarithmic expressions without using calculator.
log4(4/x)
Evaluate the expression without using a calculator.
log7 1/root:7
Click here to see answer by stanbon(57940)

Question 277231: A culture of 12 bacteria is started, and the number of bacteria will double every hour. In about how many hours will there be 5,00,000 bacteria
Click here to see answer by stanbon(57940)

Question 277250: logx=1-log(x-3)
what is the value of x?
Click here to see answer by nerdybill(7003)

Question 277250: logx=1-log(x-3)
what is the value of x?
Click here to see answer by dabanfield(803)

Question 277364: logx-2(logy+logz)
Click here to see answer by stanbon(57940)

Question 277178: Hi my question is how do I simplify: y = 2() ?
I took the ln of both sides and I tried bringing the lnx down by properties of log so I ended up with:
lny = lnxln2x
How do I simplify this?
Click here to see answer by jsmallt9(3296)

Question 277424: log x - log 10 = 14
now i've got it to log x/10 = 14
and then x/10 = 10^14, but then what do i do?
Click here to see answer by edjones(7569)

Question 277209: what is x in the equation 2000= 5e^0.045x ?
Click here to see answer by jsmallt9(3296)

Question 277451: Radioactive carbon-14 decays according to the function Q(t)=Qoe^-0.000121t where t is time in years, Q(t) is the quantity remaining at time t, and Qo is the amount of present at time t=0. Estimate the age of a skull if 23% of the original quantity of carbon-14 remains.
Thank you! TT^TT
Click here to see answer by nerdybill(7003)

Question 277239: Solve the equation exactly for x.
e^x+3=8*6^x

Click here to see answer by jsmallt9(3296)

Question 277519: how do you solve the problem
log base 25 (5). i need to know how to write out all of the work involved
Click here to see answer by Alan3354(31487)

Question 277175: Evaluate each expression without using a caculator:
Log_2X+Log_4X=6
Click here to see answer by jsmallt9(3296)

Question 277241: Solve the equation exactly for t.
15e^0.08t=13e^0.09t
Click here to see answer by jsmallt9(3296)

Question 277387: Solve the logarithmic equation. Be sure to reject any value that is not in the doman of the original logarithmic expression. Give the exact answer.
ln(x-6)+ln(x+1)=ln(x-15)
Click here to see answer by jsmallt9(3296)

Question 277539: find the inverse of the function
y=log5(x^2)
the five is small
Click here to see answer by jsmallt9(3296)

Question 277643: Write the expression as a sum and or a difference of logarithms with all variables to the first degree.
ln sqrt(fz)divided by z^10
Answer: 1/2 lnf - 19/2 lnz
Click here to see answer by stanbon(57940)

Question 277669: Solve for X. (Type an integer or simplified fraction).
log x+log (x-15)=2
Click here to see answer by stanbon(57940)

Question 277569: 2logx - log5 = 4
Click here to see answer by jsmallt9(3296)

Question 277571: [inside brackets = Base]
(log[5](3x+10))-(3log[5](4))=2
Solve the equation.
Thanks.
Click here to see answer by jsmallt9(3296)

Question 277571: [inside brackets = Base]
(log[5](3x+10))-(3log[5](4))=2
Solve the equation.
Thanks.
Click here to see answer by Alan3354(31487)

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