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

Algebra: Logarithm

Solvers

Lessons

Problems, free tutors

Quiz

In Depth

Tutors Answer Your Questions about logarithm (FREE)

Question 47037This question is from textbook
: ln (x + 5) - ln x =(4/3)This question is from textbook

Click here to see answer by uuuu(3)

Question 47048This question is from textbook

: A bacteria culture started with a count of 480 at 8:00 A.M. and after t hours is expected to grow to f(t)=480(3/2)^t. Estimate the number of bacteria in the culture at noon the same day.
Thanks.This question is from textbook

Click here to see answer by Nate(3495)

Question 47049This question is from textbook

: The decibel level of sound is given by D=10*log(I/10^-12), where I is the sound intensity measured in watts per square meter. Find the decibel level of a whisper at an intensity of 5.4 x 10^-10 watts per square meter.This question is from textbook

Click here to see answer by Nate(3495)

Question 47047This question is from textbook

: The population P of a certain culture is expected to be given by a model P=100e^rt where r is a constant to be determined and t is a number of days since the original population of 100 was established. Find the value of r if the population is expected to reach 200 in 3 days.
Thank you.This question is from textbook

Click here to see answer by Nate(3495)

Question 47087: Express as a single natural log: 2lnx + 4lny -5lnz
Click here to see answer by mathchemprofessor(65)

Question 47161This question is from textbook college mathematics 11
: need help solving log subscript 3(10x-1) - log subscript 3(x)=2This question is from textbook college mathematics 11

Click here to see answer by Nate(3495)

Question 47180: Expand: Log2 8xy
Click here to see answer by adamchapman(301)

Question 47179: Express the logarithm in a simplified form?
3lnx-2lny-4lnz
Click here to see answer by adamchapman(301)

Question 47368: Help Please.
Use the change of base rule to find the logarithm to four decimal places.
log8 0.78
Click here to see answer by Nate(3495)

Question 47374: Hi again,
I could use soem help in seeing how this problem is worked out:
2^x-6=8^x
Thanks again,
Lous
Click here to see answer by Nate(3495)

Question 47445: I have problems with logs please help
log4 (x - 2) + log4 (x - 2) = 1
Click here to see answer by longjonsilver(2297)

Question 47446: Help
log5 x = 3
Click here to see answer by longjonsilver(2297)

Question 47509: proof Loga X=Y
Click here to see answer by stanbon(26252)

Question 47609: Rewrite the expression as a sum or difference or multiple
log^2(x^6y^7/4)
Click here to see answer by Nate(3495)

Question 47756: Simplify: 2log(base4)9 - log(base2)3
Click here to see answer by stanbon(26252)

Question 47762: slove
log6 4x-log6 (x-3)=log6 12

Click here to see answer by stanbon(26252)

Question 47771: Given that log (lower a)(x)=3.58 and log (lower a) (y)= 4.79, find log (lower a)(y/x).
I can not figure out these logarithms. Please help. Test coming soon.
Click here to see answer by stanbon(26252)

Question 47447: Write in logarithmic form
2^-2 = 1/4
Click here to see answer by stanbon(26252)

Question 47779: Using a calculator, find log 1000 where log means log to the base of 10.
Click here to see answer by stanbon(26252)

Question 46867This question is from textbook COLLEGE ALGEBRA

: solve for x
log2(x+2) + log2x=3This question is from textbook COLLEGE ALGEBRA

Click here to see answer by consc198(59)

Question 47866: Most calculators have 2 different logs on them: log, which is base 10, and In which is base e. In computer science, digital computers are based on the binary numbering system which means that there are only 2 numbers available to the computer, 0, and 1. When a computer scientist needs a logarithm, he needs a log to base 2 which is not on a calculator. To find the log of a number to any base, we can use a conversion formula as shown here: ?
Click here to see answer by stanbon(26252)

Question 47879: Ok, in conjunction of question 47866, using this formula below:
log b a =
log a
_____
log b
Using this formula, find log 2 1000. Round your answer to the hundredth's place.
(NOTE: the b in log b a is small as well as the 2 in log 2 1000) Hope that makes sense.
Click here to see answer by stanbon(26252)

Question 47888This question is from textbook college math ll
: expand the expression log sub script 4 32xThis question is from textbook college math ll

Click here to see answer by stanbon(26252)

Question 47887This question is from textbook college math ll
: ln sqrt x-2 = -2This question is from textbook college math ll

Click here to see answer by Nate(3495)

Question 47887This question is from textbook college math ll
: ln sqrt x-2 = -2This question is from textbook college math ll

Click here to see answer by stanbon(26252)

Question 47886: Why is a 7.0 earthquake ten times stronger than a 6.0 earthquake?
Click here to see answer by stanbon(26252)

Question 47886: Why is a 7.0 earthquake ten times stronger than a 6.0 earthquake?
Click here to see answer by tsmith5651(7)

Question 47885: What is the formula for measuring earthquakes?
Click here to see answer by stanbon(26252)

Question 47369: Use the change of base rule to find the logarithm to four decimal places.
log4.6 22
Click here to see answer by Nate(3495)

Question 48065: solve Log(a)(7x+1)= Log(a)(4x+16)
where both sides are multiplied by Log(a) can't i really just ignore that and
solve the equation 7x+1=4x+16
which reduces to 3x=15 so x=5?
Click here to see answer by atif.muhammad(135)

Question 47979: write as a single logarithm
5Lnx-81Lny

solve for x
4Ln(3x)=40
10x+3=102

expand 1og(x raised to the 3rd power) divided by 10,000
5-x+2=5 3x+7
Click here to see answer by Nate(3495)

Question 48091: Find the number log5(1/5).
My possible answers are:
a. -5
b. -1
c. 0.2
d. 1
Thank you for your help.
Click here to see answer by Nate(3495)

Question 48140This question is from textbook College Algebra Enhanced with graphing utilities
: Not sure how to do the algebra or calculator part to solve composite functions.
This question is from textbook College Algebra Enhanced with graphing utilities

Click here to see answer by tutorcecilia(2042)

Question 48217: I am trying to answer a question that reads: "Explain the difference between a logarithm of a product and the product of logarithms and give examples of each" I understand the product of a logarithm is the sum of the logarithm however I do not understand the difference?

Click here to see answer by stanbon(26252)

Question 48260: would really appreciate help on this one!
solve for x:
2log[base 4]x-log[base 4](x-1)=1
Click here to see answer by stanbon(26252)

Question 48256: Express Logarithm as a single quantity:
4[lnx-7ln(x-2)]-5ln(x+2)
=4[lnx/(x-2)^7] - ln(x+2)^5
=ln[(lnx^4/(x-2)^28]/(x+2)^5]

Click here to see answer by stanbon(26252)

Question 48672: I need help in finding the value of X:
log2 8 = x
Click here to see answer by longjonsilver(2297)

Question 48803: Solve for x exactly. Do not use calculator or table show work.
In (log x)=1
Click here to see answer by stanbon(26252)

Question 48986: write the logarithmic equation in exponential form
log 3 27 = 3
log 125 25 = 2/3
Click here to see answer by Nate(3495)

Question 48985: convert to logarithmic equations
16 ^3/2 = 64
e^x = 5
Click here to see answer by Nate(3495)

Question 49208: Solve for x: log(4x^2)-log(16x)=1

Click here to see answer by longjonsilver(2297)

Question 49211: 5^2x-1=27.6
solve for x

Thank you, Michelle
Click here to see answer by AnlytcPhil(958)

Question 49211: 5^2x-1=27.6
solve for x

Thank you, Michelle
Click here to see answer by atif.muhammad(135)

Question 49138: Sir, if you please sent me formulas of calculas,trignomentry,algebra e.t.c
Click here to see answer by atif.muhammad(135)

Question 49307: 4e^(3x-1)=46
Click here to see answer by Nate(3495)

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