Questions on Algebra: Logarithm answered by real tutors!

Tutors Answer Your Questions about logarithm (FREE)

Question 617245: 2^x=4x solve for x
Click here to see answer by Alan3354(31532)

Question 617405: if log base b (2)=x and log base b (3)=y, evaluate the following terms of x and y:
log base b (24)=
log base b (216)=
log base b (16/27)=
(log base b (27))/(log base b (4))=
Click here to see answer by stanbon(57967)

Question 617412: 6^log base 6^81 evaluate?
Click here to see answer by Alan3354(31532)

Question 617482: log of (x-6) in base 11 plus the log of (x-4) in base 11 equals 1. I am having a lot of trouble with this please help
Click here to see answer by josmiceli(9817)

Question 617284: log (x + 16) = log x + log 16, reject any value of x that is not in the domain of the original logarithmic expression
Click here to see answer by ankor@dixie-net.com(15746)

Question 617516: I need help with this problem with simplify. log61/36

Click here to see answer by lynnlo(4169)

Question 617575: What value of x will make the following equation true?
logx81 = 4

Click here to see answer by jsmallt9(3296)

Question 617577: What value of x will make the following equation true?
logx81 = 4

Click here to see answer by Alan3354(31532)

Question 617617: I'm stuck on this question:
+
I worked out the first part as 4log 2 with base 3 but not sure this is right. Any help would be great. Thanks.
Click here to see answer by stanbon(57967)

Question 617712: If logx(1/4)=-2, find x
Click here to see answer by lwsshak3(6763)

Question 617576: What value of x will make the following equation true?
logx81 = 4

Click here to see answer by richard1234(5390)

Question 617926: log[6](x-2)+log[6](x+3)=1
Click here to see answer by nerdybill(7008)

Question 618085: Evaluate the logarithm without using a calculator.
log1/3 81
What I tried so far was setting it equal to x.
Then I ended up with:
1/3^x = 81
I'm not sure if this is the correct way to do it or not. If it is what do I do next, if it is not then HELP please.
Click here to see answer by solver91311(17077)

Question 618078: The question asks:
– +
The homework needs me to show the steps. Can anyone help?
Thanks in advance...
Click here to see answer by jsmallt9(3296)

Question 618296: What is log(base3)8+log(base3)(7-2x)=2
Click here to see answer by lwsshak3(6763)

Question 618297: What is log(base3)8+log(base3)(7-2x)=2
Click here to see answer by nerdybill(7008)

Question 618358: Write as a single logarithm whose coefficient is one: 2logb(8)-logb(3)
Click here to see answer by nerdybill(7008)

Question 618359: If f(x)= x²+2x, then find f(a+h)-f(a)
Click here to see answer by nerdybill(7008)

Question 618366: The question is asking me to convert the following into a single logarithm:
–
They want me to show them the steps. Any help would be greatly appreciated.
Click here to see answer by ewatrrr(10682)

Question 618387: how would you solve the problem log(base 6) x 89?
Thanks!
Click here to see answer by nerdybill(7008)

Question 618388: 2588=2500e^r(6)
Click here to see answer by ewatrrr(10682)

Question 618423: combine the logarithm 1/2logx - log(x^3y) + logxy^4
Click here to see answer by ewatrrr(10682)

Question 618423: combine the logarithm 1/2logx - log(x^3y) + logxy^4
Click here to see answer by josmiceli(9817)

Question 618452: Solve the equation for x
ln(3x+1)=ln(2x-8)
Click here to see answer by Alan3354(31532)

Question 618476: solve the equation
5log(base2)x=24
Click here to see answer by lwsshak3(6763)

Question 618620: The amount of carbon-14 located in animal bones after t years is given by P(t)=Poe^-0.00012t a bone has lost 19% of its carbon-14 how old is the bone? How old is a bone that has lost 23%?
Click here to see answer by nerdybill(7008)

Question 618684: how do condense log base 5 of y-(log base 5 of x+2 log base 5 of r)

Click here to see answer by ewatrrr(10682)

Question 618666: Solve each equation: Round answers to the nearest thousandth.
4^(6x-1)=5^(x+4)
I origionally attepted to set the equation to a logarithim but i was not sure how to remove the X from both powers, i got to
logbase4 5^(x+4)=6x-1 but got lost with the x+4, but now while typeing this i think i may use power property? (x+4)logbase4 5=6x-1? Then I get lost with how to remove the log from the problem, thanks -Brandon
Click here to see answer by nerdybill(7008)

Question 618362: If f(x)= 2x-4 and g(x)=3x+1, then (f+g)(x)= ?
Click here to see answer by scott8148(6628)

Question 618791: Please help me solve these: (a): log[x](6)=(1)/(2) and (b): log[x](3)=(1)/(3). I was asked to find x. Thanks very much.
Click here to see answer by scott8148(6628)

Question 618920: log3(x) + log3(6x)=3
Click here to see answer by stanbon(57967)

Question 618921: I am in chemistry and need help on solving logarithms. please show me step by step so I can do the rest. Thanks so much. Question: solve for x. log(x)=0.46
Click here to see answer by stanbon(57967)

Question 619002: Log8 base 7 minus log8 base 7
Click here to see answer by Alan3354(31532)

Question 619134: 1/125=25^-3/2
Click here to see answer by Alan3354(31532)

Question 619139: Please help me solve this:
Let F(x)=2x-3 and G(x)=3-5x . Find (FoG)(x)
Click here to see answer by nerdybill(7008)

Question 619260: help me please to find the base of 30is50% of what number.

Click here to see answer by Alan3354(31532)

Question 619315: Solve the logarithmic equation: In x + In x^2=3
Click here to see answer by nerdybill(7008)

Question 619314: The population P (in millions) of California x years after 2000 can be modeled by P=34e^0.013x.
a.) Use properties of logarithms to solve this equation for x.
b.) Use your equation to find x when P=38.Interpret your answer.

Click here to see answer by nerdybill(7008)

Question 619318: The percentage P of radioactive carbon-14 remaining in a fossil after t years is given by P:100(1/2)^t/5700. Suppose a fossil contains 35% of the carbon-14 that the organism contained when it was alive.Estimate the age of the fossil.
Click here to see answer by ankor@dixie-net.com(15746)

Question 619317: Solve the logarithmic equation: log(x+1)+log(x-1)=log3
Click here to see answer by sophxmai(60)

Question 619316: Solve the logarithmic equation: In x +In(3x-1)=In 10
Click here to see answer by lwsshak3(6763)

Question 619340: The intensity of light is reduced by 2% for each metre that a diver descends below the surface of the water. At what depth is the intensity of light only 10% of that at the surface?
Click here to see answer by Theo(3504)

Question 619407: log(x+2)to base 3+log(10-x)to base 3-3=0
Click here to see answer by stanbon(57967)

Question 619407: log(x+2)to base 3+log(10-x)to base 3-3=0
Click here to see answer by ewatrrr(10682)

Question 619671: How can I calculate logbasex(logbase5(x+5))=0
Click here to see answer by ewatrrr(10682)

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