my problem is as follows: Solve: 3^x2=9^x+4 do I "log" both sides or "ln" both nor either?
49,278 results
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

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

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!

Algebra II
ok now this is an algebra 2 problem... I have goten far down to hear e^(ix) = (4i +/ 3)/5 now how do I solve for x I feel really stupid now as this is algebra 2... can't use natural log right or the common log as ln( e^(ix) ) does not equal ix so what do

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

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!

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
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

math
helo sir/madam can u help me to solve this problem sOLVE 2log 15 +log(5x) log4x=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

CALC
1. The problem statement, all variables and given/known data cos(x) = 2 I was trying to solve that problem ignoring what people say about it not being defined and got a number strangely. I showed step by step so you can tell me what I did wrong as I don't

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 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 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?

Maths , logarithms
Can someone solve for x please. I don't understand it. 2^x . 7^x = log 14 My answer : 14^x = log 14 = log14÷log 14 = x X=1 Is this right????

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
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
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

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?

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

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

Math
prove: 1/log(base36)a = 2/log(base6)a i made a common base and then multiplied both sides with log(base6)a to get 2=log(base6)a/log(base6^2)a but this is as far as i can figure.

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

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.

Calc
1. The problem statement, all variables and given/known data cos(x) = 2 I was trying to solve that problem ignoring what people say about it not being defined and got a number strangely. I showed step by step so you can tell me what I did wrong as I don't

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

logarithms
Ive been staring at this problem for like a half hour now and I cant figure out where to even begin... log(base x)4 + log(base 8)squareroot(x) = 4/3 solve for x any help appreciated

LOGARITHMS
HI THE QUESTION STATES THAT ONE SHOULD CALCULATE THE LOGS WITHOUT THE USE OF A CALCULATOR...OKAY MY PROBLEM IS THIS... 2 3 2log 8 + 2log 8 what should i do? i had come to the piont of... 4 5 log 8 + log 8 But what's to do now i don't know..Think u can

Chemistry
I am trying to solve a buffer problem. I know I need to use the HendersonHasselblach equation but I am not getting the correct answer. The problem is: Propionic acid is a weak monoprotic acid with Ka = 1.3×105 M. NaOH(s) was gradually added to 1.00 L of

math
100=1.5(1.1^n  1)/1.11 Could you be so nice please and help me find the solution. The answer is 22 but I have whole time different number. I use log on both sides : 100=1.5(1.1^n  1)/1.11 10 = 1.5(1.1^n  1) 10 = 1.65^n  0.5) log 10.5 = n log 1.65 n =

math
100=1.5((1.1^(n)  1))/1.11 Could you be so nice please and help me find the solution. The answer is 22 but I have whole time different number. I use log on both sides : 100=1.5((1.1^(n)  1))/1.11 10 = 1.5(1.1^(n)  1) 10 = 1.65^n  0.5) log 10.5 = n

Chemistry
Hi, I'm trying to solve some chemistry problems, like the ones my teacher says will appear on our exams. The problem reads like this: What is the hydrogen conentration in a bleach sample that register 9.55 using a pH meter? My Attempt: Since this sample

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

math, algebra
Problem: A formula for a football player's rushing average r with a total of y yards rushed in n carries of the ball is r=y/n. Solve for n. I have no other information this is how its in the book how do i even solve for n if theres no numbers. You don't

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
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)=

math
Solve for the indicated variable A=1/2 bh Solve for b 2A = bh, so b = 2A/h ok thanks so on this example C=2pie r Solve for R Would the answer be 2C/pie=r ???? ok thanks so on this example C=2pie r Solve for R Would the answer be 2C/pie=r ???? Divide both

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.

physics question
A 278kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 30.0° with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.870, and the log has an

math,help
can someone help me with this i am lost now i've been doing math for the past 8 hrs. Problem # 1 solve: 4(x10)3x=x40 Problem # 2 solve for t: a = p + prt Problem#3 translate to an algebraic equation 7 less than the quotient of a number and 3 is twice

Chemistry
I need to know if I am anywhere in solving this problem: Please tell me if this is correct. The pH of a solution: 0.20 M CH3COOH and 0.10 M CH3COONa pH=pKa+log{[CH3COONa]/[CH3COOH]} pH= log(1.8x105)+log{0.10/0.20} pH= 4.74+log 0.50= 4.740.30= 4.44

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

precalc
Solve: round to the thousandths if necessary! 1) 4^3/4x+5 = 12 2) log(x1) + log x = log 6 3) 2log(base 4) 5  log(base 4) x + log(base 4) 3  log(base 4) 7 = 1/2

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

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

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

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

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 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

logarithim
my problem is as follows: Solve: 3^x2=9^x+4 do I "log" both sides or "ln" both nor either?

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

calculus
solve the following equation. log 1/6 (x^2+x) log 1/6 (x^2x)=2 **the 1/6 is lowered on both sides and the (x^2+x) and (x^2x) should be higher on both sides**

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) =

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
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

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

precalculus HELP!
I posted this question before: What is the area enclosed by the graph of the absolute value(3x)+ the absolute value(4y)=12 I tried solving for y and got: y=4x when I graphed this, I got a linear equation graph...I am wondering if I am supposed to find the

math
What is outliers? how do you solve this problem? please give me some answers. In statistics outliers are data points that very far from the mean. There are some rules of thumb for determining them, but I don't recall them right off hand and don't want to

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.

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

College Alegebra
I know I have to take the log of both sides, but I don't seem to get how they work out! Can anyone explain how to do 3e^(1+x) = 2 AND 10^(2x+3) = 280 If you walk me through one I should be able to figure out the other. Hopefully... I think you need to go

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 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)

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

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

Math
How would I would I solve this problem 2575h=h+25 Add 25 to both sides. Subtract h from both sides. This should leave you with 76h = 50 Finally, divide both sides by 76

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.

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 =

math
I can't figure out this problem: AX+BY=C SOLVE FOR Y AX+BY=C SOLVE FOR Y subtract AX from both sides. AX  AX + BY = C  AX combine terms. BY = C  AX divide both sides by B BY/B = (CAX)/B Y = (CAX)/B

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

MATH PLEASE CHECK IT!!2
m2/m5*m+5/m2=1 If your problem is this: (m  2)/(m  5) * (m + 5)/(m  2) = 1 (m  2) cancels out in both the numerator and denominator on the lefthand side since you are multiplying. That leaves us with this: (m + 5)/(m  5) = 1 To solve for m:

Algebra
Solve problem by showing necessary steps to resolve. 0.06q + 14 = 0.3q  5.2 Subract 0.06 q from both sides. 14 = 0.24q  5.2 Add 5.2 to both sides 19.2 = 0.24 q Finally, divide both sides by 0.24 You will end up with q on one side of the equation and a

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.

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

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
i don't know how to do this problem. i keep getting stuck. can anyone help me? Solve: log(base8)^(n3) + log(base8)^n+4)= 1

Algebra
2x + 1/2 = x/2 + 1/3 Subtract the x/2 from both sides to get 2x + 1/2  x/2 = + 1/3 Now subtract 1/2 from both sides to get 2x +  x/2 = 1/3  1/2 Then combine terms on both sides and solve for x. Subtract the x/2 from both sides to get 2x + 1/2  x/2 = +

math
How would I use separation of variables to solve the initial value problem? dy/dx = (y +5)(x+2) I multiply both sides by dx so: dy= (y+5)(x+2)dx Then I get variables on the same sides:: dy/(y+5)= (x+2)dx Then I have to take integrals of both sides but this

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 :)

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! :)

HELP!
How many times do I have to tell you the answer is d. Goodness. http://www.jiskha.com/display.cgi?id=1168934037 all you had to do was add two numbers given, and double it, and put the neg sign in front. I have no idea what the answer to this problem is,

algebra
1 1 7 y  =  2 8 8 please help me! It isn't clear to me what this expression means. Can you clarify it? (onehalf times "y") minus oneeighths equals seveneighths or (1/2 * y) 1/8= 7/8 solve the equation, then check your solution. Ok, this is how I

maths
Solve the equation using the multiplication principle. 35 = 7k Solve the equation. clear fraction and decimal first. 2.(y7) (y+4)) = 6y 3. 5b  8 = 5  2b  1b Problem one: multiply both sides of the equation by 1/7 Problem two: I will be happy to

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?

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

algebra
solve each literal equation for the indicated variable linear equation for x 2x+3y=6 can some one give me a example and show me how the steps go to solve this problem please Subtract 3y from both sides of the equation, and then divide both sides by 2.

Math
Here is my problem. I'm to solve the proportion of 4/5=x8/8. My answer looks like tis: 32=5x8 add 8 to both sides so then it would look like this: 8+32=5x8+8 therefore my next step is 40=5x now I divided both sides by 5 and got 8=x. Is this correct?

chemistry  titration
Show that for the titration of a weak acid, HA, with NaOH solution, at halftiter, pH = pKa. Please explain your answer. Thank you. HA + NaOH ==> NaA + HOH Ka for HA = (H^+)(A^)/(HA) and solve for H^+. (H^+) = Ka*[(HA)/(A^) When HA is half neutralized,

urgent urgent algebra / precalculas
For # 1, im getting stuck on this problem i don't understand this 1.4 = e ^ (0.03k) Now take the natural logarithm of both sides to solve for , ln 1.4 = ln e ^ (0.03k) ln 1.4 = 0.03k * ln e Recall that ln e = 1. ln 1.4 = 0.03 k Solve for k. Then try part

Pre Calculs
The pH of a chemical solution is given by the formula pH = log10 [H+] where [H+] is the concentration of hydrogen ions in moles per liter. Values of pH range from 0 (acidic) to 14 (alkaline). (a) what is the pH of the solution for which [H+] is 0.1? (b)

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

Math
The problem I have to solve is log with base 2 ^6 multiply by log base 6 ^ 8. I use the change of base formula and got log6/log2 * log8/log6 Which become log6/log2 * log2()^3/ log 6 I'm stuck here thanks.

Math
log(base5)x+log(base25)x+log(base125)x=33 solve for x

maths
how to solve x for 12(log x)^214log(x)+2=0 i don't know how to factor out log and log x^2

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?

HELP!
I have no idea what the answer to this problem is, I'm given choices but I'm still lost. Given: log sub a 2=.4, log sub a 3 =.5, log sub a 5=.8 what is log sub a .01? a)0.7 b)0.6 c)1.44 d)2.4 Please Help! loga 10 = loga2 +loga5 you are given both of

Math
Find X 27^4x2=243^3x=6 Please Explain Thanks Is this a repeat of the problem you posted earlier? If so, it should be 274x2 = 2433x+6 You might try it the hard way. (4x2)*log 27 = (3x+6)*log (243) Solve for x. I get 12. Post your work if you get stuck.

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