solve for x by writing the equation in exponential form: log sub 4 x=2 log sub 5 (2x + 1)=2
73,386 results
Math
If ln a=2, ln b=3, and ln c=5, evaluate the following: (a) ln(a^−2/b^4c^−3)= .9524 (b) ln(√b^−4*c^1*a^−1)= 1.739 (c) ln(a^2b^4)/ln(bc)^−2= 42.39 (d) (ln(c^−1))*(ln(a/b^3))^−4= .03507 I am getting these answers but the problem gives me an

Algebra 2
How is the expression log 32  log 8 written as a single logarithm? log 4 log 8 log 24 log 40

Trigonometry
This is a logs question If u=x/y^2, which expression is equivalent to log u? 1) log x + 2 log y 2) 2(log x log y) 3) 2(log x + log y) 4) log x 2 log y

Trigonometry
The expression log(x^n/ radical y)is equivalent to 1. n log x  1/2 log y 2. n log x 2 log y 3. log (nx)  log (1/2y) 4. log (nx)  log (2y)

math
how do i solve for x when x = log(32.5)? here's my work: log x = y 10^y = x then, x = log (32.5) 10^x = 32.5 10^x = 17/2 this is where i get stuck... i don't know how to get rid of the bases... can some one please teach me how? thank you! :)

Mathematics
Prove that log a, log ar, log ar^2 is an a.p. Is the following below correct? Log ar^2  Log ar= Log ar  Log a hence applying laws of logarithm Log(ar^2/ar) = log(ar/a) Log and log cancels out and then crossmultiply hence a^2r^2 = a^2r^2 L.H.S=R.H.S

precalc
Suppose that u=log(2) and v=log(5). Find possible formulas for the following expressions in terms of u and/or v. Your answers should NOT involve any log's. a) log(0.4)= b) log(0.08)= c) log(2500)=

Algebra II
Please check answers: Use the equation of the exponential function whose graph passes through the points (0,2) and (2,50) to find the value of y when x= 2. My answer: 2/25 Solve 64^x/=5/2 Thanks.

math(Please help)
1) use the properties of logarithms to simplify the logarithmic expression. log base 10 (9/300) log  log 300 log 9 = 2 log 3 log 300 = log 3 + log 100 = log 3+2 I just do not know how to put these together now!

PreCalc/Trig...
Write the equation y = log x in exponential form.

math
Given that 2 log base2 (x+15)  log base2 x = 6 1.Show that x^2 34x +225 = 0 2. Hence or otherwise solve the equation 2 log base 2 (x+15)  log base 2 x =6

math
mathematically Evaluate without using tables 2 log base 10 raised 2 power 5 + log base 10 36  log base10 9 that is, 2log10 5 +log 10 36  log 10 9

math
solve for x by writing the equation in exponential form: log sub 4 x=2 log sub 5 (2x + 1)=2

Math
Please help, thank you. Write the logarithmic equation in its equivalent exponential form. log 0.000001 = –6

college algebra
Write expression as one logarithm and simplify if appropriate. log 3√x + log x^4  log x^3 4 log (x+3)  5 log (x^2+4) + 1/3 log y I have these who problems but I don't know where to start. HELP Please.

Logs.
Can you please help me with the following log. problems? thanxs! Solve the exponential equation. Use a calculator to obtain a decimal approximation, correct to two decimal places, for the solution. 7^x = 6^(x + 7) this is how far I got: x log 7/x log 7=

Math
The problem 8^x = 16^x+2 the choices a)8 and b)8. Help please! Given that information I want to say the answer is 8 ? where is the 2. Use parentheses. Is it 16x+2 or 16x+2 The 2 is part of the exponent. Take the log of both sides. log 8x=log 16x+2 x*log

math
Logarithm!!! Select all of the following that are true statements: (a) log(2x) = log(2) + log(x) (b) log(3x) = 3 log(x) (c) log(12y) = 2 log(2) + log(3y) (d) log(5y) = log(20y) – log(4) (e) log(x) = log(5x) – log(5) (f) ln(25) = 2ln(5) (g) ln(1) =

TRig WIth LoGs help1!!
i have problem i can't solve and the book is no help.. anyone got osme hints or somehting i could start off doing? the problem is... Solve for x: log(x^3)= (log x)^3 Rewrite it as 3 log x = (log x)^3 The use algebra (divide each side by log x) to get (log

Maths
I got this question, and found what I believe to be the solution, but want it confirmed. I started with: log[base5](2x+1) + log[base5](x1) = 1 And used the product law: log[base5]((2x+1)(x1)) = 1 log[base5](2x^2x1) = 1 Then I changed to exponential

Math (Logarithms)
How do u do logarithms where there is a log on one side and a number on the other... Example 21.044=log(P/30) I don't want just an answer to the example, i need to know how to do it please... convert your log equation into an exponential equation.

Logarithms
Kepler's third law of planetary motion relates P, the period of a planet's orbit, to R, the planet's mean distance from the sun, through the equation log P = 1/2 (log k + 3 log R), where k is a constant. a) Rewrite the formula as a single logarithm. b)

Calculus
Express in exponential form: y = log x with base 2 the  in front is like a 1 multiplied so write it as y = log2 x1 then 2y = 1/x

Math  Exponential equation
Solve the exponential equation. Express your solutions in exact form only. Please show all of your work. 5e^(x log(9)) = 11

Math
Find the value(s) of x for which the equation is true. log(x + 20) = log(x) + log(20) Solve the logarithmic equation for x. (Enter your answers as a commaseparated list. Round your answer to four decimal places.) ln(x − 2) + ln(x + 3) = 1

MathLOGS
Express x in terms of a,b and c. log x = 1/2 (log a + log b  log c) Please solve and explain how to do this type of problem, thank you!

mathematics logs
which three statements are true? a) if x= 10^4 then log 10 = 4 b)if x= 2^8 then log 2x = 8 c) log2 2= 4 d) if x= 3 then log10 3=x e) log 10 2562log 10 a/log 10 b f)log 10 (ab)= log 10 a/log 10 b g) the gradient of the graph of y= 2x^x at x= 2 is 2e^e

math
solve exactly for a in the equation: log a^5 + log a^(3/2) = log 625 4 2 8 the 4,2,8 are the bases

Math  Logarithmic
Is the following correct when restating logs with variables to exponential? Log: log_a(a^3)  base = a Exp: a^3 = a I know when dealing with real numbers, this is what you do: Log: log(10^5) Exp: 10^5 = 100 000

math
Q1:solve log(5)xlog(25)(x+10) = 0.5 Q2:If 2log(a)x=1+log(a) (7x10a) ,find x in terms of a. Q3:Find x for which 27x3^lgx = 9^1+lg(x20) Q4:Find x in terms of a and c ,given that log(√ a)(1/x)+log(a)x +log(a^2) x +log (a^4)x=c

College Algebra
Solve the logarithmic equation. Express your solutions in exact form only. Please show all of your work. log base 6 (64x^3+1)log base 6 (4x+1)=1

maths
which three statements are true? a) if x= 10^4 then log 10 = 4 b)if x= 2^8 then log 2x = 8 c) log2 2= 4 d) if x= 3 then log10 3=x e) log 10 2562log 10 a/log 10 b f)log 10 (ab)= log 10 a/log 10 b g) the gradient of the graph of y= 2x^x at x= 2 is 2e^e

math retry 2
8^x = 16^x+2, x+2 2=0 8^x =16^x+2, 2 x 8 = 16 log sub 5 (2x+3)=2 2(7/2)+3=2 log sub 5 (2x+3)=2 log sub 5 =11 The first and second lines make no sense whatsoever. The last is even more confusing. Watch 8^x = 16^(x+2) 8^x = 8^2(x+2) x= 2x+4 solve for x. On

Math short but tricky
Solve log. 2 log (x1)= log (x+1) the answer is 3 but i don't know how to get it...Any one hint or suggestion will be greatly appreciated :)

Algebra
Is this correct? Rewrite as an equivalent exponential equation. Do not solve. log[8](64)=2 Answer= 8^2=64

chemistry
Q: Calculate the pH of a solution that is 0.56 M HC3H5O3 and 1.28 M NaC3H5O3. I used the HH equation for this and got this so far: HC3H5O3 acid NaC3H5O3 base pH = pKa + log([NaC3H5O3]/[HC3H5O3]) = log(Ka of HC3H5O3) + log(1.28/0.56) = log(1.4*10^4) +

Math
Write the exponential equation in its equivalent logarithmic form. 5^4 = 625 I know I have to change it to log or ln and something is equal to I think either 4 or 5.

math
solve for x without using a calculator 5^(x+1) = 25 i know that x would equal 1 because 5^2 is 25, but i don't know how to show how to solve it All you need to do is what you just did: Explain that if x = 1, the equation is satisfied. If you are looking

Pre calculus
Okay, I'm really fuzzy about my log and exponential chapter. For example, solving some exponential equation such as e^3x7 x e^2x=4e I assume I start this equation by taking the natural log of both sides, but how will I know just by looking at an equation

Algebra 2
solve for x: 3^2x+3=7^x+1 I did 2x+3=log0f3(7)+ logof3(7) (2log of 3(7))x=log of 3(7)3 x=log of 3 (7)+log of 3 (3^3)/log 0f 3 (3^2)log of 3 (7) x=log of 3 (71/3^3)/log of 3(9/7) log of 3(7/27)/log of 3(9/7) answer log of 9/7(7/27) Is this correct?

Algebra 2 once more
I have more answers that I would like checked. Also, there is one that I'm really confused about. I appreciate any help. :) Rewrite as the log of a single number. 1) 8 ln 2 = ln(2^8) 2) log 42  log 6 = log 36 (I think this one may be wrong). Evalute each

Precalculus
Explain how to do these please. 1. solve x=log(base2)*1/8 by rewriting in exponential form. 2. Solve log(3x+1)=5 3. Solve log(base x)8=1/2

algebra
logarithms Solve the following equations 3^x2=6 Add 2 to both sides of the equation to start. Whatever operation you do to one side of an equation you must do to the other side as well. 3^x  2 + 2 = 6 + 2 3^x = 8 Changing to logs: log 3^x = log 8 x log 3

algebra
solve 4^3x4=32^x+2 Please help! Do you mean 4^(3x) 4 = 32^x +2 ? yes If that is really what you mean, I cannot get a closedform solution for you. You would have to solve it by trialanderror or graphical means. If, on the other hand, you mean

Advanced Functions/ Precalculus Log
1. Evaluate 4^(log base4 64) + 10^(log100) 2. Write 1+log(base2)x^3 as a single logarithm 3. Write log(base b)√(x^3 y z^6) 4. Solve log(base 2)xlog(base 2)6=log(base 2)5+2log(base 2)3 5. Solve 3^(2x) = 9(81^x) 6. Solve 3^(2x)=7^(3x1). Round answer to

precalculus
What is the base of the function F(x) = b to the power of x if the graph has points of (1/3, 2)and another off the subject one if g(x)= log 7 x what is g(1/49)? If F(x) = 2 when x = 1/3, and if the fucntio is of the form F(x) = b^x, then 2 = b^(1/3) Cube

algebra homework
please check my answers. Solve the logarithmic equation. Be sure to reject any value that is not in the domain of the original logarithmic expressions. Give the exact answer. ln sqrt x+6 = 9 i got {e^96} log (x + 4) = log (5x  5) i got: 9/4 log (x + 30)

Math
h(x) = log (6x+5/7x4) Find a formula for the inverse function h^1(x) h^1(x) = My work so far h(x) = log(6x+5/7x4) y=log(6x+5/7x4) x=log(6y+5/7y4) 7xy4x= log(6y+5) how would I solve from here. Would I solve for y then do the natural log of both sides

Re: Algebra II
How to solve Log (9x+5)  Log ((x^2)1) = 1/2 16 16 (The 16 is from the logarithmic function : b) (y=log x) b Could anyone post the answer to this? 16 is supposed to be next to Log(16) but lower. This is for both the Logs in the equation.

Precalculus
Solve each exponential equation. Give answers as decimals accurate to the thousands place. 1) log(base5)14=2x9 2) log(base7)5=76x 3) (1/3)^(3x+5)=(9)^(8x) 4) 4^(x5)=8^(x+2)

math
write as a single logarithm: 2logbase3(1/x)+(1/3)logbase3(square root of x) please show the steps to solving this. thanx. remember that 1 log (AxB) = log A + Log B (same base) 2 log (A/B) = log A  log B 3 log A^n = n log A use these three rules and it

Calculus AB
How do you solve a system of logarithmic equations? They have completely different bases: {(log(25)^3)x + (log(2)^7)y = log(5)^27 {(log(7)^8)x + (log(3)^5)y = log(49)^2

check!
here is the question: log5(x4)= log7x solve for x. These are just base 10 logs. log100 = 2 This equation has the same format as log 40 = log (2x20) Since both sides have log base 10, you divide by log base 10 and end up with 5(x4) = 7x, so 5x 20 =7x

Algebra 2
how do not understand how to do this Log X + Lob (X3) = 1 I know I do this Log X(X3)=1 then I do this Log X^(2)  3X = 1 then I do this 2 Log (X3X) = 1 then 2 Log (2X) = 1 then (2 Log (2X) = 1)(1/2) Log (2X) = 1/2 then (Log (2X) = 1/2)(1/2) Log X =

calculus
Please help me solve this equation. log[2](3)+log[2](x)=log[2](5)+log[2](x2) 1. Solve equation by setting up algebraically. 2. Use appropriate properties of Logarithm to reduce the number of logarithmic terms to only one. 3. Solve logarithmic equation.

chemistry
The definition of pH is: pH = log 10[H^+] what is the defintion of the [OH^]... is it pOH = log 10[OH^]? Yes!! pH =  log10 anything. pKa = log Ka Pkb = log Kb pKw = log Kw = 14 PKsp = log Ksp (solubility product) and so on into the night.

Math
solve log(7x3)+2log(5)=2+log(x+3) I've attempted to do this question and I ended up with log(73)+log(5^2)log(x+3)=2 but I don't what to do next or whether I did something wrong.

Trigonometry
Solve for x to the nearest hundreth and can you explain how you get your answer I don't understand 3^x = 1.295 Your question has nothing to do with trigonometry. You can solve for x by taking the logarithm (to any base) of both sides of the equation. Then

precalculus
My book tells me to solve each exponential equation. I am given a lot of problems such as 6^x+1 = 4^2x1 where I use In in the problem to help get my answer. However, in the same section, the book starts giving me problems such as 3(2)^x2 +1=100 and

Precalculus
This is for solving exponential/logarithmic functions: (This is a base e Logarithmic function I would assume): e^(4x)/10 =4^x2 ? I understand the properties of logs for the most part, but I have a hard time figuring out the stepbystep process on how to

Math
Find the exact solution, using common logarithms, and a twodecimalplace approximation of each solution. log(7x + 4) = 2 + log(2x − 3) Solve the equation. log(x^3) = (log x)^2

Trigonometry /Logarithms (brace yourself)
This is an outline that i have to use to find the solution of the question. It involves logarithms and halfangle formulas.I have worked though it but got stuck on some parts. I'd like if you look over my work. solve the triangle for which given parts are

trigonometry
This is an outline that i have to use to find the solution of the question. It involves logarithms and halfangle formulas.I have worked though it but got stuck on some parts. I'd like if you look over my work. solve the triangle for which given parts are

Precaculculus
Suppose you are told that log(2)=0.3562 and log(3)=0.5646. All of them with the base of 'a'. Find: i) log(6) ii) log(9) Solutions i) log(6)= log (3)(2) = log 3 + log 2 = 0.5646 + 0.3562 = 0.9208 ii)log(9)= log 3^2 = 2 log 3 = 2 (0.5646) = 1.1292

logarithms
Solve the logarithm equation. Express the solution in exact form only. log[6](64x^3+1)log[6](4x+1)=1

algebra
2. The level of thorium in a sample decreases by a factor of onehalf every 2 million years. A meteorite is discovered to have only 8.6% of its original thorium remaining. How old is the meteorite in millions of years? 2) You need to show how you use the

Math  Logarithm
Solve the following logarithm equation. Please show all of your work. log (5 + x) – log(x – 2) = log 2

Math Help Please
Which of the following expressions is equal to log (x sqrty)/z^5 A. log x + log (1/2) + log y– log 5 – log z B. log [x + (1/2)y – 5z] C. log x + (1/2)log y – 5 log z d. [(1/2) log x log y]/(5 log z)

Math log equations/exponential form
How do i express this to exponential form? a) log√2(w^2 x^3/y^5 z^7) b) log(x^2 y^3 √z1)

math
write as a single logarithm: ln(x/x1)+ ln(x+1/x) ln(x^21) please show me the steps. thanx Michelle, I hope you know the three main rules of logs. 1. log (AB) = log A + log B 2. log (A/B) = log A  log B 3 log A^n  n log A Using these rules and guessing

PreCalc
Hi, I need help writing log(x^29)log(x^2+7x+12) as a single logarithm. Thankyou! since there is a subtraction sign in between that means you divide the two terms...so it would be log(x^29/x^2+7x+12) you can go further and factor the two...so by

Algebra
1)If y varies inversely as x and y = 3, when x = 6. Find y when x = 36. A)72 B)2 C)1/2 D)18 I chose C y1/x2 = y2/x1 3/36 = y2/6 18/36 = 1/2 2)Write the equation 4^3 = 1/64 in logarithmic form. A)log64 = 4^3 B)log^3 64 = 4 C)log^4 1/64 = 3 D)log^4(3) =

Math
Help with these problems would be greatly appreciated: 1.Find the definite integral of dx/(x(1+ln(x))from e^6 to 1. 2. Solve for x in terms of k for log[2,x^6)+log[2,x^10=k. (its log base 2) 3.Solve log base 3(log base 3, x)=2

trigonometry repost .
This is an outline that i have to use to find the solution of the question. It involves logarithms and halfangle formulas.I have worked though it but got stuck on some parts. I'd like if you look over my work. solve the triangle for which given parts are

maths
Combine into one log: log √ x + 1 + 9 log x i.e. rewrite as an expression of the form log u, where u is a function of x.

Math
How would you solve this equation? log(ab)=log(a)*log(b) a=30, b=60 Does the it appear that this is a true statement? Why?

Mathematics
Simplify by writing as a single logarithm & State restrictions: log(6𝑥^2+5𝑥−6) + log(2x − 3) − log(4𝑥^2 − 9)

Logarithm help
using logarithms to solve exponential equations. 5^1+x = 2^1x I need exact numbers. I did one on my own already. 5^x1 = 9 5^x1 = 9 log(5^x1) = log9 (log5)(x1) = log9 x1 = (log9/log5) x= (log9/log5)1 x = 2.3652 Logarithm help  Joe, Friday, September

statistic
With an exponential transformation, how does the data set (x, y) change? (2 points) (log x, y) (x, log y) (log x, log y) cannot be determined without a data set

statistic
With an exponential transformation, how does the data set (x, y) change? (2 points) (log x, y) (x, log y) (log x, log y) cannot be determined without a data set

maths
which three statements are true? a) if x= 10^4 then log 10 = 4 b)if x= 2^8 then log 2x = 8 c) log2 2= 4 d) if x= 3 then log10 3=x e) log 10 2562log 10 a/log 10 b f)log 10 (ab)= log 10 a/log 10 b g) the gradient of the graph of y= 2x^x at x= 2 is 2e^e

Trig
log base b 64  log base b 16 = log base 4 16 solve for the variable.. i got to the part as far as: (log 4/log b) = 2 now i m stuck at how i can isolate the b. plz help!

math
This was a question asked yesterday that I am stuck on also  could you explain how to solve this using this "log" on the calculator please? I'm working on a problem where I was given a table and had to find the exponential equation of best fit. The table

Precalc
1. Solve log (4x) = log (2) + log (x1) the fact that this is x1 and not + is really messing me up because i keep getting a negative number and that isnt possible 2. Solve: absolut value of(x^2 4x4) = 8 thanks so much!!! I have been studying and my

Math 12
Hey everyone; There are some questions on my review I am having trouble with. 4. Evaluate each logarithm. g)log base 5 square root 5 I can't figure out how to do square roots... h)log base 3 1 I got 3, but the anwser is 0 Also, directions ask you to write

Algebra 2
Explain the difference between log base b (mn) and ( log base b of m)(log base b of n). Are they equivalent? My answer: Let b=2, m=8, n=16 *log base b (mn)=log base b of m + log base b of n log base 2 of 8+ log base 2 of 16=7 * (log base b of m) (log base

Math/trig
Log radical b/ a^2 is equivalent to 1) 1/2 log b + 1/2 log a 2) l/2 log b 2 log a 3) 2 log b  1/2 log a 4) 1/2logb/2 log a

math
Use the Laws of logarithms to rewrite the expression log(base 2)(11x(x9)) in a form with no logarithm of a product, quotient or power. After rewriting we will have: log(base 2)A+log(base 2)x+log(base 2)f(x) What is A and what is f(x)?

maths
solve the equation log(y)/log(2) + log(y)/log(4) = 6

Math
Solve the equation. log 6.44 + 3 log x  log x^2 = log 6.44 + 3

Chemistry
Calculate the hydronium ion concentration of blood which has a pH of 7.24. 7.17 x 104 M 5.75 x 108 M 1.15 x 107 M 0.86 M none of the above I had chose 1.15*10^7 by doing the log equation log(1.15...) and I but it goether with log(10*^7.24) and it

math
Solve log. 2 log (x1)= log (x+1) the answer is 3 but i don't know how to get it...Any one hint or suggestion will be greatly appreciated :)

Precalculus
I'm studying for my precalc exam and have completed 42 practice problems. I have 3 I need to answer that I can't. Please help. What is the base of the function G(x) = log subscript b x if it's graph has points (16,4)? Using the properties of logarithms how

math
Given: f(x)=log 5 x what is the value of f(125) and f(1/25)? Totally lost! I assume you mean f(x) = log (5x), not log 5 * x. If this is the case, then f(125) = log 600 and f(1/25) = log (1/5) If the base of the logs is 10, then log 600 = 2.778..

PreCalculus
Hi i don't know how to do this problem solve for n^3 given that log(40 SQRT(3))/log(4n) = log(45)/log(3n) Thanks i'm copletely lost and don't know how to solve

Precalculus
Solve (log x)^2 = log x Also, when will their be a possibility that an equation will have an extraneous solution? Like if you got two solutions for a log equation, will a negative solution for x automatically be extraneous?

calculus
Use a linear approximation of f(x)=log(x) at x=1 to approximate log(3/4). Express your answer as an exact fraction; remember that log denotes the natural log.

Math
Okay so the question is: "Three people are cheering simultaneously. Measured individually, the cheers are 80dB, 80dB, and 50dB. What would the cheering measure totally? Use your knowledge of logarithms to solve." So the formula we were given a few days ago

Math  Logarithms
can someone pleaaase help me with these "solve for x": a) log_x 100 = 5 b) 3^x+5 = 81 c) log (4x + 2)  log 2 = log 6x thanks heaps!

algebra
1. logx+log(x+48)=2 14.log50+log(x/2)=2 23.log72log(2x/3)=0 Could someone please explain to me how to solve these?