Questions on Algebra: Logarithm answered by real tutors!

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Question 170635: e^4X-e^2X-6=0
How do I solve for X using natural logs?
: e^4X-e^2X-6=0
How do I solve for X using natural logs?

Click here to see answer by stanbon(18998)

Question 170623: log5(5X/x-2) = 2: log5(5X/x-2) = 2
Click here to see answer by stanbon(18998)

Question 170596: 2^x+1=1/16: 2^x+1=1/16
Click here to see answer by Alan3354(1427)

Question 170597: ln (y^2-1)= ln(y-1) + ln5: ln (y^2-1)= ln(y-1) + ln5
Click here to see answer by nerdybill(1123)

Question 170498: log5(X-4)= 2-log5(14-X): log5(X-4)= 2-log5(14-X)
Click here to see answer by stanbon(18998)

Question 170492: log 10 5 + 3 log 10 25 =: log 10 5 + 3 log 10 25 =
Click here to see answer by stanbon(18998)

Question 170476: Solve: log base2 (x^2-203)=5
(log base 2 x squared minus 203 equals 5): Solve: log base2 (x^2-203)=5
(log base 2 x squared minus 203 equals 5)
Click here to see answer by stanbon(18998)

Question 170478: Solve the logarithmic equation:
log5x=log6 + (x+6): Solve the logarithmic equation:
log5x=log6 + (x+6)
Click here to see answer by stanbon(18998)

Question 170477: Solve:
log(x+7)=1-logx: Solve:
log(x+7)=1-logx
Click here to see answer by stanbon(18998)

Question 170415: The Ehrenberg equationgive the relationship between height h(in inches)and the average W (in pounds)for children between 5 and 13 years old.
W = 5.2911e^.0467h
Find the average weight of a child who is 4 feet 6 inches tall.

What height would correspond to an average weight of 107 pounds?: The Ehrenberg equationgive the relationship between height h(in inches)and the average W (in pounds)for children between 5 and 13 years old.
W = 5.2911e^.0467h
Find the average weight of a child who is 4 feet 6 inches tall.

What height would correspond to an average weight of 107 pounds?
Click here to see answer by midwood_trail(260)

Question 170409: Solve the following equation. Show all your work.
2log9(2x+5)-1=0: Solve the following equation. Show all your work.
2log9(2x+5)-1=0
Click here to see answer by Alan3354(1427)

Question 170403: Solve the following equation. Show all your work.
logx(10-3x)=2: Solve the following equation. Show all your work.
logx(10-3x)=2
Click here to see answer by nerdybill(1123)

Question 170381: Solve the following equation. Show all your work.
logx=-2: Solve the following equation. Show all your work.
logx=-2
Click here to see answer by stanbon(18998)

Question 170375This question is from textbook Precalculus
: Kindly explain how to resolve the following logarithmic equation
1) 1 - log (x - 2) = log (3x + 1)
Thanks so much!!!This question is from textbook Precalculus
: Kindly explain how to resolve the following logarithmic equation
1) 1 - log (x - 2) = log (3x + 1)
Thanks so much!!!
Click here to see answer by Alan3354(1427)

Question 170357This question is from textbook Exponential and Logarithmic Equations and Inequalities
: ln e = ?
I'm not sure it's 1
thank you This question is from textbook Exponential and Logarithmic Equations and Inequalities
: ln e = ?
I'm not sure it's 1
thank you
Click here to see answer by checkley77(3639)

Question 170044: 1.find the domain of the function f(x) = ln (8x-24)
2. simplify log (1/10)
3. write as a single logarithm and simplify (no decimal approximations)
2 log 6 + log x - log 2
4. expand and simplify (no approximations: ln(ex): 1.find the domain of the function f(x) = ln (8x-24)
2. simplify log (1/10)
3. write as a single logarithm and simplify (no decimal approximations)
2 log 6 + log x - log 2
4. expand and simplify (no approximations: ln(ex)
Click here to see answer by ankor@dixie-net.com(4532)

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

Question 169502: condense the expression log 3+ 1/2 log x-log 5: condense the expression log 3+ 1/2 log x-log 5
Click here to see answer by chiefman(9)

Question 170138This question is from textbook intermediate algebra
: 90) 3^2x -8 . 3^x +15=0
94) If x= (log125 5)^log5 125
Please help me to solve this two. Thank You
This question is from textbook intermediate algebra
: 90) 3^2x -8 . 3^x +15=0
94) If x= (log125 5)^log5 125
Please help me to solve this two. Thank You

Click here to see answer by jim_thompson5910(9376)

Question 170105: log5 (25^2 divided by5 -)=
Rewrite the equation using one or more properties of lagarithims and evaluate without a calculator.: log5 (25^2 divided by5 -)=
Rewrite the equation using one or more properties of lagarithims and evaluate without a calculator.
Click here to see answer by jim_thompson5910(9376)

Question 170088: The questions are rewrite the following expression using one or more properties of logarithims and evaluate without a calculator.
1. log 5 (25 2/5 -)=
Plese check and see if this is correct. log5 25 2 - log5 5, 2 log5 25- log5 5, 2x2-1= 4-1=3
2. log5 125 + log5 5=
I was able to figure out a portion of the problem but then got lost. Please check and help me with the rest. log5 (125x5)= log5 625 ( this is where I got lost)
3. log9 3 - log9 243=
I think I figured out a portion of this problem as well, but then got lost. Please check and help me with the rest. log9 3/243 reduced to log9 1/81,
log9 81 ( this is where I got lost): The questions are rewrite the following expression using one or more properties of logarithims and evaluate without a calculator.
1. log 5 (25 2/5 -)=
Plese check and see if this is correct. log5 25 2 - log5 5, 2 log5 25- log5 5, 2x2-1= 4-1=3
2. log5 125 + log5 5=
I was able to figure out a portion of the problem but then got lost. Please check and help me with the rest. log5 (125x5)= log5 625 ( this is where I got lost)
3. log9 3 - log9 243=
I think I figured out a portion of this problem as well, but then got lost. Please check and help me with the rest. log9 3/243 reduced to log9 1/81,
log9 81 ( this is where I got lost)
Click here to see answer by stanbon(18998)

Question 170034: The question is rewrite the following expression using one or more properties of logarithims and evaluate without a calculator.
log4- log 400,000=
I have searched and cannot find any examples of how to solve this problem. Thank you for your help, Jackie: The question is rewrite the following expression using one or more properties of logarithims and evaluate without a calculator.
log4- log 400,000=
I have searched and cannot find any examples of how to solve this problem. Thank you for your help, Jackie
Click here to see answer by stanbon(18998)

Question 169977: log 18 to 68.3 its multiple choice and need to evaluate to 4 decimal place
: log 18 to 68.3 its multiple choice and need to evaluate to 4 decimal place

Click here to see answer by nerdybill(1123)

Question 169553: evaluate the expression
2^(log2^3): evaluate the expression
2^(log2^3)
Click here to see answer by jim_thompson5910(9376)

Question 169553: evaluate the expression
2^(log2^3): evaluate the expression
2^(log2^3)
Click here to see answer by Alan3354(1427)

Question 169939: Express a single logarithm and simplify
log a 10,000-log a 100: Express a single logarithm and simplify
log a 10,000-log a 100
Click here to see answer by stanbon(18998)

Question 169939: Express a single logarithm and simplify
log a 10,000-log a 100: Express a single logarithm and simplify
log a 10,000-log a 100
Click here to see answer by Alan3354(1427)

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
: Could you help me solve this equation?
2-log3x = log(x/12)
How do you know?
Thank you so much.
Click here to see answer by stanbon(18998)

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: 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(9)

Question 169729This question is from textbook
: ln x = 3 - x, solve for x, exact answer.This question is from textbook
: ln x = 3 - x, solve for x, exact answer.
Click here to see answer by Edwin McCravy(2086)

Question 169822: express as a product log8 times the square root of y: express as a product log8 times the square root of y
Click here to see answer by stanbon(18998)

Question 169726This question is from textbook
:
If you may please show the steps.
Thanks!This question is from textbook
:
If you may please show the steps.
Thanks!
Click here to see answer by Edwin McCravy(2086)

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.: 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 solver91311(1877)

Question 169816:
Determine if given function is one to one. If it is, find the formula for the inverse.
f(x)=5x-6:
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(474)

Question 169799: 84x=70 x is the exponent: 84x=70 x is the exponent
Click here to see answer by jojo14344(881)

Question 169727This question is from textbook
: e^x2 - 2 = x^3 - x
Please show the steps.
Thanks!This question is from textbook
: e^x2 - 2 = x^3 - x
Please show the steps.
Thanks!
Click here to see answer by solver91311(1877)

Question 169554: Solve the equation
{4^p}{4^p}=256: Solve the equation
{4^p}{4^p}=256
Click here to see answer by checkley77(3639)

Question 169744: Logb A =1.32 and logb B =.36. What is logb A/B?: Logb A =1.32 and logb B =.36. What is logb A/B?
Click here to see answer by Alan3354(1427)

Question 169728This question is from textbook
: ln x = 3 - x, solve for x, exact answer.This question is from textbook
: ln x = 3 - x, solve for x, exact answer.
Click here to see answer by liuhenryf(1)

Question 169555: Solve the equation
5^(-4-x)=25: Solve the equation
5^(-4-x)=25
Click here to see answer by Alan3354(1427)