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Algebra: Logarithm

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Question 137694: Solve: log5(2x+1)=2
Click here to see answer by Fombitz(2113)

Question 137921: Please help me in solving this question. - Find the value of : -

Click here to see answer by stanbon(26252)

Question 137920: Please help me solve this question: -
Log base 1/2(x-1)>0
Click here to see answer by stanbon(26252)

Question 138093: log base6 12+ log base6 18 = log base 6 (12)(18)= log base6 216.....now I'm stuck, would I do log 216/log 6 =2.334/.7781 = 2.999?????
Click here to see answer by stanbon(26252)

Question 138091: help..log base 5 2500-log base5 4 = ??? I have log base5 2500 over 4 which gives me log base5 625.. now what? do I do log 625/log 5 and get 2.795/.6989 which then equals 3.999?? Not sure if I'm doing this right.
Click here to see answer by scott8148(3382)

Question 138213: Looking to verify adding (or subtracting) logarithms to a single logarithm. I have: "log 5 250 - log 5 10". I believe that if they are the same base, you can simply substract the 250 from 10 to equal 240 (e.g. log 5 240). Right? Thanks in advance.
Click here to see answer by scott8148(3382)

Question 138385: Find the domain of hte following: g(t)= log (t+2)
Click here to see answer by stanbon(26252)

Question 138396: solve for x
log2 (y+4) + log2 y =5

Click here to see answer by solver91311(5072)

Question 138538: The compound amount with continuous compounding is given by A = P e^rt , where P is the principal, r the rate, and t the time in years. If the rate is 10%, find how long it takes for the money to double, that is for A = 2P. (ln 2 = 0.69315)
Click here to see answer by vleith(1977)

Question 138602This question is from textbook College Algebra
: graph the function:
f(x)=log base 2 x/2This question is from textbook College Algebra

Click here to see answer by stanbon(26252)

Question 138584: Solve for x: 14=7^(x-3)
Click here to see answer by edjones(3291)

Question 138568: Please help explain
log2(x+5) - log2(x+1)
Click here to see answer by edjones(3291)

Question 138615: I need help with this question.
t =9
P = $3000
r = 6%
t = 9
Calculate A with continous compounding. Round to the hundredth's place
Click here to see answer by vleith(1977)

Question 138622: solve the logarithmic equation. be sure to reject any value that is not in the domain of the original logarithmic expression. Give the exact answer.
log2(x-1) = 1 + log2 (x-5)
Click here to see answer by oscargut(682)

Question 138772: Write the exponential form in logarithmic form.
f(x)=3^x
Click here to see answer by stanbon(26252)

Question 138796: This is most likely way more advanced than Algebra logarithms, but i've had success with this site before and i'm hoping someone can help me with this problem.
** I realized i forgot to include the directions, sorry!!
Write as a single logarithm and simplify
3/2ln2x^4-4/3ln2y6
the only thing i'm really stuck on is what happens to the 3/2 and 4/3 in front of ln.
help please?
-kristin
Click here to see answer by vleith(1977)

Question 138880This question is from textbook Advanced Mathmatics
: I need help with solving x in this problem: .
I have tried dividing log base 5 to both sides and then take what is left with the problem, , and put it in exponintial form, which is,. which makes x=1, which is not the right answer. According to my math teacher, x=3. Please help me.This question is from textbook Advanced Mathmatics

Click here to see answer by stanbon(26252)

Question 138869: Solve foe x:
a) (0.5)^(x+2)=3^x
b) 1/8(16^(2x-1))=(sqrt2)^x
c)2-log(5x)=log(x+1)
Click here to see answer by stanbon(26252)

Question 138853: Find all solutions:
3+2 log(x+5)=5
Click here to see answer by edjones(3291)

Question 138764: The size of a coyote population at a national park increases at a rate of 5.1% per year. If the size of the current population is 193. Find how many coyotes should be in 4 years. Use the function f(x)=193e^0.051t and round to the nearest whole number.
Thanks to anyone who may be able to help me explain this to my daughter
Click here to see answer by ankor@dixie-net.com(6691)

Question 139105This question is from textbook Algebra 2
: ln(x)+ln(x+4)=ln(5)This question is from textbook Algebra 2

Click here to see answer by scott8148(3382)

Question 139258: I am helping my daughter but this is beyond me. Someone please help.
Use properties of logarithms to expand the logartihmic expression as much as possible.
log c x^7 (the c is positioned below the log)
Click here to see answer by stanbon(26252)

Question 139256: please explain how to perform this
Evaluate or simplify the expression
log 0.0001
Click here to see answer by SnowXclouD(11)

Question 139254: I am having problems with this practice test. My exam is next week. Please help.
Find the domain of the logarithmic function
f(x) =In (1-x)
Please show how to do this
Click here to see answer by ankor@dixie-net.com(6691)

Question 139259: write the equation in its equivalent logarithmic form
5^2 =x
Thanks to anyone who can help
Click here to see answer by scott8148(3382)

Question 139595: logx64=3
Click here to see answer by solver91311(5072)

Question 139768: what is the answer for log4(25x)=7
Click here to see answer by solver91311(5072)

Question 139914: Calcalate the value for z which
2log3(Y)-log3(y+4)= 2
Click here to see answer by rapaljer(3610)

Question 140285: A computer is infected with the Sasser virus. Assume that it infects 20 other computers within 5 minutes; and that these PCs and servers each infect 20 more machines within another five minutes, etc. How long until 100 million computers are infected?
I need help setting up the equation. Thank you.
Click here to see answer by stanbon(26252)

Question 140355: What number corresponds to the log10 of 1.954
Click here to see answer by stanbon(26252)

Question 140515: How do I solve these? Thanks!
a) 5[log(100m)/log(20)] = t
b) [in(2)]/ .0564 = t
Click here to see answer by stanbon(26252)

Question 140574: Please help me solve this.
Solve for y in terms of x:log2x+log2y=1
This is all i have so far: log2xy=1 and log2 rewrites as b^p=n
So, b=2 p=1 and n=xy
What do i do after this?
Click here to see answer by oscargut(682)

Question 140615This question is from textbook
: This is my first time doing logarithm. and would like to solve for x in these problems. log3+log(x+1)=log5+log(x-3) and ln(2x+3)-ln4=2.Need answer by tomorrow.
thank youThis question is from textbook

Click here to see answer by edjones(3291)

Question 140699: How do i solve log64^8=x
The answer is 1/2 but how do you come about that answer?
Also log5^1/5=x & log7^square root of 7=x
These have me so confused.
Click here to see answer by jim_thompson5910(13786)

Question 140742: #28 Solve. Where appropriate, give approximations to four decimals places
Ln x = 1/4
Answer is e^1/4 = 1.2840
How is this the answer????
Chapter Test 8 pg 750 #28 & # 2
#2 Graph points for y = LOG X === > 2^y = X Need help Please
X Y 2
-3
-2
-1
1
2
0
Click here to see answer by c-dubb swimmer(3)

Question 140852: How you you solve these logs finding x,b or y
logBASE3^y=2 and logBASEb^32=5?
Click here to see answer by stanbon(26252)

Question 140737: An investor with interest compounded continuously doubled in 15yr. What is the interest rate?
Click here to see answer by edjones(3291)

Question 140785This question is from textbook
: I have to plot the these functions on the graph.
1.f(x)=(1/2)^x
2.f(x)= 3^x-2
^This question is from textbook

Click here to see answer by checkley77(7035)

Question 141087: I am having problems figuring these out could you help please
plot the graph
f(x)=(1/2)^x
f(x)=log2^x
Click here to see answer by rapaljer(3610)

Question 141177: please help me solve this equation: logx base 2 + log2 base x=2
Click here to see answer by stanbon(26252)

Question 141214: sketch the graph of: f(x)=2^x-1
Click here to see answer by checkley77(7035)

Question 141333: Please help me solve this simultaneous equation:
log x base 3 = y = log (2x-1) base 9
and another one:
log (x+y) = 0
2 log x = log (y+1)
Click here to see answer by Edwin McCravy(2920)

Question 141404: how do I simplify logarithm problems ? (example)
log3^5+log3^14

Click here to see answer by stanbon(26252)

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