Questions on Algebra: Logarithm answered by real tutors!

Tutors Answer Your Questions about logarithm (FREE)

Question 453355: Solve the equation 5x = 6.2. Round your answer to the nearest hundredth.

Click here to see answer by mzacarias(1)

Question 453546: what is the solution set of log4x=3
Click here to see answer by Alan3354(31529)

Question 453201: just need some log help. stuck on all this.
1)41nx-31ny+21nz ---express as a single log
2)log3 x-log3(x-2)=1
3)expand log x^4y^5/square z
Click here to see answer by lwsshak3(6761)

Question 453403: how would you write these as single logarithms?
2 log h(w) + 3 log h(v)
log2(50)-log2(10)
Click here to see answer by lwsshak3(6761)

Question 453194: Rewrite 12^(x+1) = 5^(x) as an exact value using logarithms.
Click here to see answer by lwsshak3(6761)

Question 452985:
Click here to see answer by robertb(4012)

Question 453192: Given logb(3x) = 25 and logb(27) = k - 3logb(x) then the value of k is what?
*The 'b' after the log that is NOT in brackets is the base of the log.
*Also we have a formula sheet with all of the Log Laws
Click here to see answer by lwsshak3(6761)

Question 450339: What is the solution to 2*2^x+1 -5=15
Click here to see answer by lwsshak3(6761)

Question 451136: Solve: 25^log5^x=5
Click here to see answer by lwsshak3(6761)

Question 453951: solve for x. log(base 7) (2x+3) = log(base 7) (x+2)
Click here to see answer by solver91311(17077)

Question 453996: How do you solve this?
log3(x+6) - log3 x = 5
Find the value of x.

Click here to see answer by solver91311(17077)

Question 454012: how to simplify this expression 3log3(6x-4)
Click here to see answer by stanbon(57967)

Question 454154: how would i graph this
log(x-1)+3
Click here to see answer by Alan3354(31529)

Question 454295: Please help me solve this problem: 2^(3x+3)=2^(3x+1)+48
2^(3x)X 2^3-2^(3x)X 2=48
8^x X 8-8^x X 2=48

Click here to see answer by Gogonati(817)

Question 454385: Solve the equation & check your answer(s):
ln(2-2x)=ln(x+5)+ln(x+4)
Click here to see answer by nerdybill(7008)

Question 454385: Solve the equation & check your answer(s):
ln(2-2x)=ln(x+5)+ln(x+4)
Click here to see answer by solver91311(17077)

Question 454655: What is the logarithmic form of the equation y=20^-3/2
Click here to see answer by robertb(4012)

Question 454843: Solve for x using logarithms:
Solve for x: Log base 4 of(x-6)+ log base 4 of(x+2)=2logx
Click here to see answer by stanbon(57967)

Question 454900: Solve for x:

log base 4 of(x^2+3x) - log base 4 of(x+5)=1
Click here to see answer by stanbon(57967)

Question 454968: 4+5e^-x = 0
all I can come up with is there is no solution or x = .223 I don't have a good feeling about either one, I'm just stumped on this one. I would appreciate any help I can get!
Thanks!!
Click here to see answer by Alan3354(31529)

Question 454991: Hello, I need help with this problem:
Solve logarithmic equation log(3x+15)=2 and write 5 lnx + 1/2 lny - 4 lnz as a single logarithm.
Thank you very much.
Click here to see answer by nerdybill(7008)

Question 455079: Hi. My teacher gave me a packet to do for a test next wed and i was wondering if you could help me with a problem.
Write each expression using common logs.
logBASE3(2x)
Click here to see answer by Alan3354(31529)

Question 455078: Hi. My teacher gave me a packet to do for a test next wed and i was wondering if you could help me with a problem.
Solve give completely simplified answers in terms of natural logs.
3^x = 5^x-1
thanks for your help
Click here to see answer by Alan3354(31529)

Question 455076: Hi. My teacher gave me a packet to do for a test next wed and i was wondering if you could help me with a problem.
Solve. Give answers to the nearest 100th.
1.58^x=4.02
thanks for the help
Click here to see answer by amoresroy(333)

Question 455074: Hi. My teacher gave me a packet to do for a test next wed and i was wondering if you could help me with a problem.
Solve for X. Give answers to the nearest 100th.
logBASE2(logBASE2(16))=logBASE7(x)
thank you for your help!
Click here to see answer by nerdybill(7008)

Question 455075: Hi. My teacher gave me a packet to do for a test next wed and i was wondering if you could help me with a problem.
Solve for x. Give answers to the nearest 100th.
logBASE4(logBASE8(64))=logBASE5(x)
thank you!
Click here to see answer by lwsshak3(6761)

Question 455207: Which logarithmic sp? equation is eqivalent to L^m = E
A.logBASEL E= m
B.logBASEE L= m
C.logBASEm E= L
D.logBASEE m= L
Click here to see answer by stanbon(57967)

Question 455203: thank you in advance for helping me with this problem. i have a test next week and i cant figure it out.
write each expression using common logs.
(logBASE8(x))-2logBASE8(y)
Click here to see answer by Gogonati(817)

Question 455205: hi. i have a test coming up and i was wondering if you could check this problem for me.
solve. give answers to the nearest 100th.
x^(x+1) = 4th root of 56.6
when i did it i got -.594
Click here to see answer by richwmiller(9144)

Question 455322: What does it mean to "find the domain and range of the composition f of g? and to write the answer in "set notation" ??? Thank you
Click here to see answer by stanbon(57967)

Question 455334: how do you condense,
lnx-2ln2+3ln4
Click here to see answer by Alan3354(31529)

Question 455289: If log(base 2) (1/4)=log(base 8) x, what is the value of x?

Click here to see answer by Alan3354(31529)

Question 455567: What is the solution of the system of equations?
y=-x+2
y=x-8
Click here to see answer by richwmiller(9144)

Question 455548: please help.
Solve the following mathematically
a. 3=4ln(x-2)= 11
b. log(13x-1)- log(x+2) + 1
c. solve the quadratic equation;
3x^2 - 4x-2=0
d. solve by factoring 2x^2+x-6=0
Thanks

Click here to see answer by Alan3354(31529)

Question 455028: I need to know how to get the log for the following equation:
478 = 18.5(10^x)
I keep getting 2.11449, but the correct answer is 1.4123
I need to know what I am doing wrong. Thanks for your help!
Click here to see answer by lwsshak3(6761)

Question 455693: solve log(x+20)-log(x+2)=logx
Click here to see answer by robertb(4012)

Question 455957: Evaluate exact value of expression: ln(e)^2x
Click here to see answer by richard1234(5390)

Question 456478: Write the expression and a simple logarithm log(3x + 5) - log x
Click here to see answer by tquon(6)

Question 456486: Which of these equations is the exponential form of ln ( 1/e ) = –1?
Click here to see answer by Edwin McCravy(8999)

Question 456573: CAn you please tell me what is the Lowest Common Multiple of
2x to the forth ppwer-2x square y square, 4x to the fifth power + 8x to the forth power y + 4x to the third power y square and 6x square + 6xy

Click here to see answer by richwmiller(9144)

Question 456781: Solve: logbase3(logbasex(logbase4 16)) = 1
Solve: 6^2logbase6 X + logbase6 X =125
Write the expression as a single logarithm:
3loga - logb - (1/2)logc
Click here to see answer by stanbon(57967)

Question 456887: log4 4^(2/3)=?
Click here to see answer by robertb(4012)

Question 456866: 1/4log base3 2 plus 1/4log base 3 x

Click here to see answer by nerdybill(7008)

Question 457238: solve for x: ln(x+2)=16. Give exact answer and decimal approximation to the nearest hundredth.
Click here to see answer by josmiceli(9817)

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, 10891..10935, 10936..10980