# Questions on Algebra: Logarithm answered by real tutors!

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 Algebra: Logarithm Solvers Lessons Answers archive Quiz In Depth

 Question 459036: Write this logarithm as a single log: 1/2logbasex + 4logbasex y - 2logbasex A Click here to see answer by lwsshak3(6761)

 Question 466223: Section 5.5 #48 write each expression as a sum and/or difference of logarithms. Express powers as factors In [(x-4)²/x²-1]^⅔ x>4 Click here to see answer by lwsshak3(6761)

 Question 466289: prove that log64 to base 3 divided by log8 to base 9 = 4 Click here to see answer by Alan3354(31528)

 Question 466402: I can't seem to get this.. no matter what I do Write the expression as the logarithm of a single number or expression with a coefficient of 1. Assume all variables represent positive numbers. 9 log w + 4 log z - log (x - 5) A) log w^4*z^9/(x-5) B) log (x-5)/w^9*z^4 C) log w^9*z^4/x-5 D) log w^9*(x-5)/z^4 Any help would be appreciated Click here to see answer by Theo(3504)

 Question 466404: What process would I go through to find x in the following equation? (log = logarithm) log(1 + x) + log(2 + x) = 2 I have done logarithm problems before but I never really understood the way logarithm works, I just go through the sequence my book shows me to, but I have never seen a logarithm equation such as this one before. Any help will be appreciated. Click here to see answer by nerdybill(7008)
 Question 466404: What process would I go through to find x in the following equation? (log = logarithm) log(1 + x) + log(2 + x) = 2 I have done logarithm problems before but I never really understood the way logarithm works, I just go through the sequence my book shows me to, but I have never seen a logarithm equation such as this one before. Any help will be appreciated. Click here to see answer by solver91311(17077)
 Question 466404: What process would I go through to find x in the following equation? (log = logarithm) log(1 + x) + log(2 + x) = 2 I have done logarithm problems before but I never really understood the way logarithm works, I just go through the sequence my book shows me to, but I have never seen a logarithm equation such as this one before. Any help will be appreciated. Click here to see answer by Theo(3504)

 Question 466508: Given that , find in terms of u, i) ii) iii) *Please answer as soon as possible bro. :) =) Click here to see answer by lwsshak3(6761)

 Question 460753: im not sure of how to solve these problems, 1. log3(2x-1) + log(base 3)2 = 2 2. 4(^3-2x = 12 3. 3^x = 1/81 4. 9^x - 6x3^x - 27 = 0 all working would be greatly appreciated, emily. Click here to see answer by lwsshak3(6761)

 Question 466695: What is the solve for unknwon: log^3 (2X + 1) = 1 Click here to see answer by lwsshak3(6761)

 Question 466762: 2^(3x+1)= 3^(x-2) I get log base 2^3^(x-2)= 3x+1 and I am stuck after this. Any suggestions? Thanks so much Click here to see answer by Alan3354(31528)
 Question 466762: 2^(3x+1)= 3^(x-2) I get log base 2^3^(x-2)= 3x+1 and I am stuck after this. Any suggestions? Thanks so much Click here to see answer by ccs2011(207)

 Question 466760: 5^x=4^(x+1) I can't figure out how to solve this the answer is 6.2126 but I get as far as log base 5 4^(x+1)=x I have tried dividing log(4^(x+1)) into log(S) and get no where near the answer. Any help please? Thanks so much Click here to see answer by ccs2011(207)

 Question 466853: What is 4log base 3 (3x+5)= 12 please supply steps to solution. Thank you Click here to see answer by ccs2011(207)

 Question 466852: What is log base 3 Radical b times log base 3 c to the exponent 3/2, divided by log a to the exponent 5: when log base 3 a=5, log base 3 b=-2 and log base 3 c= 3 please supply steps to solution. Click here to see answer by stanbon(57967)

 Question 466855: What is the solution for x, y, and z in this system of equations that will make all of the following statements true 2x-4y+3z=15 5x+3y-2z=-4 -3x-2y+4z=11 please supply steps to solution. Thank you Click here to see answer by Ryan O'Hara(46)

 Question 466850: What is log base 3 Radical b times c to the exponent 3/2, divided by a to the exponent 5 when log base 3 a=5, log base 3 b=-2 and log base 3 c= 3 please supply steps to solution. Click here to see answer by stanbon(57967)

 Question 466878: every weekend you ride your bike on a forest perserve path. The path is 20 miles long and ends at a waterfall, at which point you relax and then make the trip back to the straight point. One weekend, you find that the same time it takes you to travel to the waterfall is 2 miles per hour faster than the return trip. What was your average speed going to the waterfall? Click here to see answer by Big Poop(157)

 Question 467070: 5^log 8 with a base of 5. I know there is something I am forgetting about mulitplying with a number and that same number being the base. Click here to see answer by Big Poop(157)
 Question 467070: 5^log 8 with a base of 5. I know there is something I am forgetting about mulitplying with a number and that same number being the base. Click here to see answer by josmiceli(9817)

 Question 467179: page 389 for each pair funtion,find fog and gof , if they are exit 24) f = {(3,8),(4,0),(6,3),(7,-1)} g = {(0,4),(8,6)(3,6),(-1,8)} 26) f = {(2,5),(3,9),(-4,1)} g = {(5,-4),(8,3),(2,-2)} Click here to see answer by stanbon(57967)

 Question 467178: page 388 for each pair funtion,find fog and gof , if they are exit a) f = {(-1,9),(4,7)} g = {(-5,4),(7,12)(4,-1)} b) f = {(0,-7),(1,2),(2,-1)} g = {(-1,10),(2,0) Click here to see answer by Big Poop(157)

 Question 467239: Given that , FIND IN TERMS OF U, *PLEASE ANSWER AS SOON AS POSSIBLE BRO!!!!!! :) =) BTW, you are supposed to somehow express in terms of u, and not solve it with a calulator. :) Click here to see answer by Big Poop(157)
 Question 467239: Given that , FIND IN TERMS OF U, *PLEASE ANSWER AS SOON AS POSSIBLE BRO!!!!!! :) =) BTW, you are supposed to somehow express in terms of u, and not solve it with a calulator. :) Click here to see answer by josmiceli(9817)

 Question 467514: http://imageshack.us/photo/my-images/11/page400a.jpg/I need help Please! I need help check my answerPlease! number 23 only The key is 133.25lb, ............99= [√(3960^2* 125)/Ws]-3960 ( 99+ 3960)^2 = ([√(3960^2* 125)/Ws])^2 16.475.481*Ws = 1.960.200.000 ............Ws=1.960.200.000/16.475.481 ............Ws=118.98 my answer not match the key Thank you Click here to see answer by ewatrrr(10682)

 Question 467649: 1. Write 1 − 2log7x as a single logarithm. The base is 7 and the exponent is X Click here to see answer by solver91311(17077)

 Question 467734: Is this the correct answer find the value of x for: log base 5 125=x and the answer is x=5 Click here to see answer by Alan3354(31528)

 Question 467729: find the following expression as a single logarithm: log x + log 7 - log y Click here to see answer by Alan3354(31528)

 Question 467805: Rewrite the following as a logarithmic equation: b small y=x Click here to see answer by Alan3354(31528)

 Question 467811: Find the value of x for: log base 5 125=x The answer is a)2 b)3 c)5 d)15 Click here to see answer by robertb(4012)

 Question 467836: If the inflation rate is 3%, how much will a house now worth \$ 510,000 be worth in 5 years? Click here to see answer by ankor@dixie-net.com(15746)

 Question 467986: Using a scientific calculator I need to find N=e^-2.48. Click here to see answer by Alan3354(31528)

 Question 468277: The question is simplify: log (1/1000) I know that log 1 - log 1000 I know that log 1000 is simplified to -10^3 I know the answer to be -3, but I don't understand the steps from the start of the question to the answer. Click here to see answer by stanbon(57967)

 Question 468282: Express in terms of sums and differences of logarithm: ln 9/2x^2y I came up with ln9-2ln + ln2x + ln y. This is not correct. Thanks Click here to see answer by stanbon(57967)
 Question 468282: Express in terms of sums and differences of logarithm: ln 9/2x^2y I came up with ln9-2ln + ln2x + ln y. This is not correct. Thanks Click here to see answer by ewatrrr(10682)