Questions on Algebra: Logarithm answered by real tutors!

Algebra -> Algebra -> Logarithm Solvers, Trainers and Word Problems -> Questions on Algebra: Logarithm answered by real tutors! Log On

Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help!
Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations!

Algebra: Logarithm

Solvers

Lessons

Problems, free tutors

Quiz

In Depth

Tutors Answer Your Questions about logarithm (FREE)

Question 167780: Can you please help me solve this? This is what I have so far.
log5(x+3)+log5(x-3)=3
log5{(x+3)(x-3)}=3
(x+3)(x-3)=3^5
x^2-9=243
How do I finish this?

Click here to see answer by Alan3354(6059)

Question 167779: If anyone could please answer this question i would thank you graciously. g(x)= 5sqrt(x+1)-7
Click here to see answer by stanbon(26252)

Question 167778: Can you please answer this question for me it would be really appreciated. f(x)=log3(x-1)-2
Click here to see answer by stanbon(26252)

Question 167833: need to solve for x. problem : log6(4x+1)=2
Click here to see answer by stanbon(26252)

Question 167833: need to solve for x. problem : log6(4x+1)=2
Click here to see answer by Earlsdon(4898)

Question 167870: Find the following without using a calculator log 1
Click here to see answer by nerdybill(2446)

Question 168003: Find the value of x: log 361/169 =2
x
± 13/19
20/13
19/13
±19/13
±14/19
13/19
Please help to solve.
Click here to see answer by nerdybill(2446)

Question 167993: Having some serious problems with these 3 logs:
1.) 2(log 2x-log y)-(log 3 + 2 log 5)
2.) 350/(1+e to the negative x) = 300 : solve for x (not sure where to start)
3.) "the fifth" log of (x+4) - "the fifth" log of x = 3 (again solving for x, but not sure where to start with this one...it just isn't working out)
Thanks for the help,
Matt G.
Click here to see answer by nerdybill(2446)

Question 168328: Please help me understand how to do this. I really would appreciate it. Thanks.
Evaluate 4 log8 512 without using the calculator.
Click here to see answer by Fombitz(2113)

Question 168492: 4loga 5

Click here to see answer by stanbon(26252)

Question 168828: How long does it take $1000 to double if invested at 7% interest compounded continuously?
Click here to see answer by gonzo(654)

Question 168830: Condense the expression.
1/3 log5 8-1/2 log5 x = 4 log5 y
Click here to see answer by Alan3354(6059)

Question 169108: log5x=log4+log(x+1)
Click here to see answer by nerdybill(2446)

Question 169087: How do I solve log2(x+5) -3 = log2(x-2) ?
Thanks for your help
Click here to see answer by Alan3354(6059)

Question 169152: Express as a single logarithm:
5logex+logey-2logez
All the e"s are subscript.
Thank you.
Click here to see answer by jim_thompson5910(13786)

Question 169199: Solve for "x"
logbase2 4 + logbase2 27= logbase2 x
Click here to see answer by Alan3354(6059)

Question 169199: Solve for "x"
logbase2 4 + logbase2 27= logbase2 x
Click here to see answer by nerdybill(2446)

Question 169200: Solve for "x"
log x = [ (4.5*10^4)/(1.5*10^-2)(3.0*10^6)]
Click here to see answer by checkley77(7035)

Question 169324: This problem states, log base 9 (x-7) + log base 9 (x-7) is equal to 1.
I have done this over and over and can not seem to come up with the right answer. :)
log( 9, (x-7) + log( 9, (x-7) = 1

Click here to see answer by nerdybill(2446)

Question 169330: Evaluate: log base3 85
Click here to see answer by Alan3354(6059)

Question 169385: Thank you so much nerdybill for helping me with my previous problem, Question 169324. I was raising 1, to the 9th power, which is 1 - instead of 9 to the 1st power.
I have a second question, I can't seem to wrap my mind around. How do you solve:
log base a 5 = 0.699; log base a 3 = 0.477; find log base a 15
rewritten: log (a,5)=0.699; log (a, 3) = 0.477; find log (a,15).
Click here to see answer by Alan3354(6059)

Question 169365: Please help me solve .
I have this so far: .
I will appreciate any help. Thank you in advance!

Click here to see answer by Alan3354(6059)

Question 169391: Thanks Alan3354 for helping with Question 169385! I finally got the concept to figure out more problems similar to it. Thank you!
You're welcome. Any time.
Click here to see answer by Alan3354(6059)

Question 169400This question is from textbook College Algebra
: x^logx=x^3/100This question is from textbook College Algebra

Click here to see answer by Alan3354(6059)

Question 169386: write 5log(3x-11)-7log(x) as a single logarithm.
Click here to see answer by Alan3354(6059)

Question 169545: Solve the equation.
[1/8]^-2p=2^3p+2 8^2*p=8*p+2 64*p=8*p+2 56*p=2 p=2/56=1/28
NOTE (64-8)p=(8-8)p+2 but no division by (1-1) here we see 64*1/28=8*1/28 +56/28 just to see no algebra operator to get 56*p=2
a. p=2/3
b. p=-2/9
c. p=-9/2
d. p=3/2
Click here to see answer by maali40(13)

Question 169404This question is from textbook College Algebra
: x^logx=(x^3)/(100)This question is from textbook College Algebra

Click here to see answer by Alan3354(6059)

Question 169555: Solve the equation
5^(-4-x)=25
Click here to see answer by Alan3354(6059)

Question 169728This question is from textbook
: ln x = 3 - x, solve for x, exact answer.This question is from textbook

Click here to see answer by liuhenryf(1)

Question 169744: Logb A =1.32 and logb B =.36. What is logb A/B?
Click here to see answer by Alan3354(6059)

Question 169554: Solve the equation
{4^p}{4^p}=256
Click here to see answer by checkley77(7035)

Question 169727This question is from textbook
: e^x2 - 2 = x^3 - x
Please show the steps.
Thanks!This question is from textbook

Click here to see answer by solver91311(5072)

Question 169799: 84x=70 x is the exponent
Click here to see answer by jojo14344(1483)

Question 169820: How long will it take for $8900 to grow to $31,000 at an interest rate of 11.9 % if the interest is compounded continuously? Round to nearest hundreth.
Click here to see answer by stanbon(26252)

Question 169816:
Determine if given function is one to one. If it is, find the formula for the inverse.
f(x)=5x-6
Click here to see answer by stanbon(26252)

Question 169816:
Determine if given function is one to one. If it is, find the formula for the inverse.
f(x)=5x-6
Click here to see answer by jim_thompson5910(13786)

Question 169816:
Determine if given function is one to one. If it is, find the formula for the inverse.
f(x)=5x-6
Click here to see answer by gonzo(654)

Question 169726This question is from textbook
:
If you may please show the steps.
Thanks!This question is from textbook

Click here to see answer by Edwin McCravy(2920)

Question 169822: express as a product log8 times the square root of y
Click here to see answer by stanbon(26252)

Question 169729This question is from textbook
: ln x = 3 - x, solve for x, exact answer.This question is from textbook

Click here to see answer by Edwin McCravy(2920)

Question 169546: Solve the equation.
[1/8]^-2p=2^3p+2
a. p=2/3
b. p=-2/9
c. p=-9/2
d. p=3/2
Click here to see answer by chiefman(11)

Question 169502: condense the expression log 3+ 1/2 log x-log 5
Click here to see answer by chiefman(11)

Question 169505This question is from textbook Exponential and Logarithmic Equations and Inequalities
: Could you help me solve this equation?
2-log3x = log(x/12)
How do you know?
Thank you so much.This question is from textbook Exponential and Logarithmic Equations and Inequalities

Click here to see answer by stanbon(26252)

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