Questions on Algebra: Logarithm answered by real tutors!

Tutors Answer Your Questions about logarithm (FREE)

Question 476522: solve for x
log3 + log(x+4) = log5 + log(x-3)
Click here to see answer by lwsshak3(6522)

Question 476519: lnx+ln(x-5)=ln6
Click here to see answer by lwsshak3(6522)

Question 476518: Solve.
ln(3x+8)-6=3
Click here to see answer by lwsshak3(6522)

Question 476627: logb(1)=
log4(1)=
x^2=5
11x^2=-144
-sqaureroot -98
Click here to see answer by Alan3354(30993)

Question 476655: Solve for x: e^ln(5) = x
Wouldn't the answer be x=5 because the natural log and the inverse would cancel?
Click here to see answer by MathLover1(6638)

Question 476551: Given that the daily cost of production for x pounds of candy by Sweet Candy is
33005.1+=xC

(a) If each pound of candy is sold for $2, at least how many pounds must be sold daily to make a profit?
(b) If it is known that 325 pounds of candy can be sold daily, what price should be charged per pound to guarantee no loss or break even?
thank you

Click here to see answer by meganzoe(1)

Question 477066: log little b at bottom 5 square root w
Click here to see answer by Alan3354(30993)

Question 477220: log (5x+1) base 4 = 2
Click here to see answer by stanbon(57395)

Question 477466: Please help me solve this equation using logarithm. Thanks in advance

Click here to see answer by Alan3354(30993)

Question 477461: If, then prove

Click here to see answer by Edwin McCravy(8912)

Question 477458: Solve for X

Click here to see answer by ewatrrr(10682)

Question 477567: Please help me solve this log equation -3/4log16y4+2/3log8y3
Click here to see answer by Alan3354(30993)

Question 477565: Solve the following logarithmic equations showing all work.
ln 7 + ln (n - 2) = ln 6n
log516 - log52t = log52
log5m = log5125
logy = log16 + log49
log6(b2 + 2) + log62 = 2
log3(5x+5) - log3(x2 - 1) = 0
log2(x - 2) + 5 = 8 - log2 4
Click here to see answer by Alan3354(30993)

Question 477600: Solve the following equations using logarithms- show all your work. Round to 3 decimal places.
2x = 30
5x - 1 = 3x
3.53x + 1 = 65.4
16x - 4 = 33 - x
7x - 2 = 5x

Click here to see answer by Alan3354(30993)

Question 477834: The amount of money in an account with continuously compounded interest is given by the formula A=Pe^rt, where P is the principal, r is the annual interest rate, and t is the time in years. Calculate to the nearest hundredth of a year how long it takes for an amount of money to double if interest is compounded continuously at 7.3%. Round to the nearest tenth.
Click here to see answer by nerdybill(6963)

Question 477841: Concentration of Hydrogen atoms (H+) is measured in pH as given by the function pH = -log[H+], where [H+] represents the hydrogen ion concentration in moles per liter. The pH of a juice drink is 3.4. Find the concentration of hydrogen ions in the drink.
Click here to see answer by stanbon(57395)

Question 477956: Write the expression as one logarithm.
log 45 + log 5
Click here to see answer by Alan3354(30993)

Question 477956: Write the expression as one logarithm.
log 45 + log 5
Click here to see answer by King_of_Steel(2)

Question 478102: If

show that a=b
Click here to see answer by robertb(4012)

Question 478167: Hi,
Can i get solution for this problem
a^(logb-logc)* b^(logc-loga)* C^(loga-logb)
Thanks and regards,
AN
Click here to see answer by htmentor(789)

Question 478171: If

Show that x = 6561
Click here to see answer by stanbon(57395)

Question 478154: How many five-card hands consist of five cards of the same suit?
Click here to see answer by Theo(3464)

Question 478125: 43^3 = 64
Click here to see answer by Alan3354(30993)

Question 478212: solve √72 + √2 i get hung up on simplifying
Click here to see answer by Alan3354(30993)

Question 478251: Respected Sir/Madam ,
Please help me to solve my logarithm problem . I Will be very grateful for your help. My question is :

if log (a+b) /3 =1/2 * (log a + log b) then what is the value of a/b + b/a ?
As the answer given is : 7
So please tell me steps for this problem ...
Thank you
Click here to see answer by Tatiana_Stebko(1326)

Question 478338: Evaluate the following without a calculator: log8 of the 4th root of 1/2
I believe that I should be doing the 4th root of 1/2 and taking it to the 8th power?
Click here to see answer by scott8148(6628)

Question 478362: Solve: log4(5x+1)=2
I solved for 5x+1=16 and got x=3. Would that be correct?
Click here to see answer by kingme18(98)

Question 478368: find the solution of the exponential equation, correct to four decimal places.
4(1+10^5x)=9
i cannot see the topic selections. i have no clue wat topic i picked.
i am lost as far as ive gotten n this problem is
5xLog44=Log9

my teacer didnt go over example like this
Click here to see answer by stanbon(57395)

Question 478470: Solve the following exponential equations using Logarithms.
Round to 3 decimal places. Please show work, I'm very confused.
2^x = 30
5^(x - 1) = 3x
3.53^(x + 1) = 65.4
16^(x - 4) = 3^(3 - x)
7^(x - 2) = 5^x

Click here to see answer by stanbon(57395)

Question 478505: What is the solution set of log(8x^3)-log(4x)>=logx ?
Click here to see answer by nerdybill(6963)

Question 478589: Using logarithms solve ( do not use calculator )

Click here to see answer by Alan3354(30993)

Question 478615: log4x+log4(x-6)=2
Click here to see answer by lwsshak3(6522)

Question 478616: solve the expontel equation. espress the soloution set in terms of natural logs
x^x+4=5^2x+5
Click here to see answer by Edwin McCravy(8912)

Question 478711: Hi,
I tried to solve 5^logx=50-x^log5 in the following manner
Re- aligning the equation
5^logx+x^log5 =50
Taking log both sides
logx X log5 + logx X log5=log50
log(x+5) + log(x+5)=log50
From here am having confusion
1.
log(x+5)(x+5)=log50
log(x+5)^2=log50
(x+5)^2=50=>x=(50)^1/2-(5) (or)
2.
log(x+5) + log(x+5)=log50
2log(x+5)=log50
2(x+5)=50
x+5=25
x=20
Which is correct?
Thanks and regards,
AN
Click here to see answer by Tatiana_Stebko(1326)

Question 478747: Respected Sir/Madam ,
Please help me to solve my logarithm problem . I Will be very grateful for your help. My question is :
If a^3 +b^3=0 then the value of log (a+b) -1/2 * (log a+ log b+ log 3)is equal to ?
As my Answer given is :0
So please mam provide me the steps for this logarithm question..
Thank you,

Click here to see answer by Tatiana_Stebko(1326)

Question 479051: log4 4^0.8=x
b^x=y
4^x=4^0.8
x=√4^0.8
x=1.74
but when changing 4^1.74=11.16 and 4^.8=3.03 I can't seem to be doing this right since the exponents do not match the value. please help
Click here to see answer by Alan3354(30993)

Question 479123: My question is as follows. ln 3 square root E^4. (The 3 is in the square root sign) Didn't know how to make it on the computer. Thanks!
Click here to see answer by Tatiana_Stebko(1326)

Question 479137: How am I able to do e^20x-7 = 6? I converted to logarithmic form for the equation and got ln6=20x-7, but I'm at a loss here, can someone walk me through step by step?
Click here to see answer by Theo(3464)

Question 479141: Hi,
I am stuck in solving x=Log √2√2√2√2 to the base √2 . Kindly help me to solve.
It is nested square root of 2.
Thanks and regards,
AN
Click here to see answer by Tatiana_Stebko(1326)

Question 479169: 1728 to base 2 under root 3
HOW TO SOLVE THIS
Click here to see answer by Tatiana_Stebko(1326)

Question 479159: I'm having trouble on the question: For what values of X; 2/x > 2/x^2? I don't honestly understand what its asking or how to do it lol. I'd appreciate a hand in figuring it out, thanks!
Click here to see answer by cleomenius(959)

Question 479286: log_2(1/8) =?

Click here to see answer by King_of_Steel(2)

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