Questions on Algebra: Logarithm answered by real tutors!

Tutors Answer Your Questions about logarithm (FREE)

Question 624952: log (100,00xy) simplify
Click here to see answer by jsmallt9(3296)

Question 625272: solve log2 5 + 3 log2 x=3

Click here to see answer by nerdybill(6959)

Question 625435: 3.5 million drop by two logs equals what number
Click here to see answer by Alan3354(30993)

Question 625597: could u help me,,,4e to the power of x minus 3 = 0..
Click here to see answer by Edwin McCravy(8909)

Question 625703: 3e^x+1=5
Click here to see answer by jim_thompson5910(28595)

Question 625857: Solve for x. Round to the nearest ten-thousandth.
ln(e^6x)=61
e^61 = e^6x
6x=61
x=61/6
x=10.6667
Click here to see answer by jim_thompson5910(28595)

Question 625866: Which of the following is the simplified version of (1/2) log 3 x + 2 log 3 y + 4 log 3 z ?
Click here to see answer by oscargut(891)

Question 625858: find the logarithm of(756.3)^1/3*0.0063*4.8^4
Click here to see answer by Alan3354(30993)

Question 626329: Without a calculator, show that + > 2.
Click here to see answer by Alan3354(30993)

Question 626356: Use the Laws of Logarithms to combine the expression.
5log(x)-((1)/(5))log(x^(2)+1)+5log(x-1)
Click here to see answer by stanbon(57361)

Question 626403: Find the exact solution, using common logarithms, and a two-decimal-place approximation, when appropriate.
log(x^(2)+6)-log(x+1)=2+log(x-1)
x=
x~
Click here to see answer by lwsshak3(6509)

Question 626338: factor and solve (lnx)^2 +1/2ln(3x^2)=20+ 1/2ln3
Click here to see answer by jsmallt9(3296)

Question 626595: In(x)-In(x+5)=2
Click here to see answer by lwsshak3(6509)

Question 626689: How do you condense this expression to a logarithm of a single quantity?
(9/2)log^5(z-4)= log^5(z-4)^???
Thanks!
P.S. "5" is the base of the log.
Click here to see answer by fcabanski(874)

Question 626696: if log 125=b, then express log5 in terms of b

Click here to see answer by fcabanski(874)

Question 626769: How do you condense this expression into a logarithm of a single quantity?
7[In z + In(z+7)]-6 In(z-5)= ???
I thought the answer would be something like this:
In((x^(-6)/(z+7)*(z-5))^(7))
My answer automatically comes out to be wrong, though. I'm not sure how to answer this one. Please help me. Thank you!
- Cassidy
Click here to see answer by jim_thompson5910(28595)

Question 626809: How do you condense this expression into a single quantity?
log^3 6- log^3 (t)= ???
P.S. the "3" represents the base of the log.
Thank you!
- CEW
Click here to see answer by jim_thompson5910(28595)

Question 626894: Please help with expressing this as a single logarithm (and simplifying if possible): ln x^6-2 ln sqrt(x^5). Answer is x but unsure of steps to get there. Thanks
Click here to see answer by lwsshak3(6509)

Question 626908: Find the exact solution, using common logarithms.
log(x^(2)+3)-log(x+3)=2+log(x-3)
Click here to see answer by jsmallt9(3296)

Question 626971: How do I use the properties of logarithms to expand this expression as a sum, difference, and/or constant multiple of logarithms? Thanks.
log^b sqrt(x)*y^2/z^2
Hope that makes sense...
- Cassidy W.
Click here to see answer by ewatrrr(10682)

Question 626995: if logb 6 = 1/4, then log b 36= what?
Click here to see answer by ewatrrr(10682)

Question 626995: if logb 6 = 1/4, then log b 36= what?
Click here to see answer by fcabanski(874)

Question 627046: solve the exponential equation. express irrational solutions as decimals correct to the nearest thousandth. 2^x-2=3^2x
Click here to see answer by solver91311(16897)

Question 627014: What percent of 139.87 is 123 and what percent of 136.78 is 138
Click here to see answer by rfer(12660)

Question 627143: e^x+5=2
Click here to see answer by jim_thompson5910(28595)

Question 627155: if logb3=0.23 and logb8=0.71 find logb24.
Click here to see answer by solver91311(16897)

Question 627168: find x:
e^x+2e^x+2=5
Click here to see answer by asuar010(324)

Question 627187: Solve the following equation
log (2y) + Log (4y-1)=2

Click here to see answer by hammy(9)

Question 627187: Solve the following equation
log (2y) + Log (4y-1)=2

Click here to see answer by josmiceli(9681)

Question 627217: After t years, the annual sales in hundreds of thousands of units of product q is given by q=(1/2)^(.8)^t
1)After how many years will the annual sales be about 95,350 units? Show your work. (Hint: You will have to take the log of both sides twice.)
Click here to see answer by jsmallt9(3296)

Question 627490: log subscript 35 4170
Click here to see answer by stanbon(57361)

Question 627466: How do I rewrite this expression as a logarithm of a single quantity?
3 (Im x - 2 In (x^3 + 2))+ 4 In 5 = ???
And...
How do I solve these equations? Thanks!
1.) 2 In x = 14 ??? (demonstrate how?)
2. log^2 x + log^2 (x + 2) = log^2 (x + 6)= (please show steps!)
FYI: The "2" represents the base of the log for question #2. Again, thank you.
- Cassidy
Click here to see answer by jsmallt9(3296)

Question 627712: I am trying to find the inverse of the following function: f(x) =-4(x-3)^2+5
This is what I have so far(I don't think it is right):
y=-4(x-3)^2+5
y-5= =-4(x-3)^2
(y-5)/(-4)=(x-3)^2
take the sqrt both sides and get
sqrt of (y-5)/(-4)= x-3
x= sqrt of (y-5)/(-4)+3
When I graph this it is wrong...What am I doing wrong?
Thanks for the help!
Click here to see answer by solver91311(16897)

Question 627718: Hello! I asked for help on these questions earlier, but no one has responded yet.
Click here to see answer by richwmiller(9143)

Question 627755: If a=2 and b= 3, write the expression ln(9) in terms of a and b. Note that you are not being asked to approximate the value of the expression
Click here to see answer by solver91311(16897)

Question 627855: 1/2lne^(100)
Click here to see answer by ewatrrr(10682)

Question 627853: lne^(x^2+4)
Click here to see answer by ewatrrr(10682)

Question 627852: e^(ln81-ln9)
Click here to see answer by ewatrrr(10682)

Question 627851: e^2ln3
Click here to see answer by ewatrrr(10682)

Question 627850: e^ln5
Click here to see answer by ewatrrr(10682)

Question 627920: Solve exponential eequations, epress in terms of ln
e^x+5 = 8
Click here to see answer by ewatrrr(10682)

Question 627949: log3x^2=2log3 4 - 4 log 3 5
Click here to see answer by ewatrrr(10682)

Question 627858: Evaluate the logarithmic expression. Do not round the expression until the final answer. When necessary, round to the nearest hundredth.
log[2]32 (1/5)
Click here to see answer by jsmallt9(3296)

Question 628058: Evaluate the expression: log[3](log[5](125))
Click here to see answer by ewatrrr(10682)

Question 628155: Write the expression as a single logarithm with a coefficient of 1. Assume all variable expressions represent positive real numbers.

3log(x) + (1/4)log(y) + log(x + 7)
= ?
Click here to see answer by reviewermath(527)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845, 10846..10890