Monday

July 6, 2015

July 6, 2015

Number of results: 98

**Precalculus **

Please help me with these questions ASAP!! Suppose that f(x)=log3(x-1) a)If f(6)=1.4 and f(8)=1.7,then evaluate log3(35) and log3(7/5). b)If f(3)=0.6, find log9(2).
*March 3, 2010 by jh*

**Algebra 1**

Lesson 3 Assignment .Explain the differences between solving these two equations: By steps log3(x - 1) = 4 AND log3(x - 1) = log3^4
*February 9, 2011 by Matt D.*

**ALGEBRA 1**

Lesson 3 Assignment .Explain the differences between solving these two equations: By steps log3(x - 1) = 4 AND log3(x - 1) = log3^4
*February 9, 2011 by Matt D.*

**Math**

Solve the logarithmic equation. Express your solutions in exact form only. Please show all of your work. log3(x+2) + log3(x+8) 2 = log3(x+3)
*June 9, 2011 by Allison - Carson*

**Math**

(I have two questions) 1. Solve for x without a calculator: log3(x^2)=2log3(4)-4log3(5) This is what I have so far: 2log3(x)=log3(4^2)-log3(5^4) 2log3(x)=log3(16/625) ...and now I'm stuck. 2. Simplify: 2log4(9)-2log3 <--how do you simplify with different bases? Thanks!
*January 28, 2010 by Moe*

**Math**

Express the following as a logarithm and simplify. 1. log(3x^2 + 11x - 20) - log(3x - 4) 2. 1/6 log3 27 + log3 18 - log3 2 3. log5 cube root of 625 4. 2loga x^3 + 3loga y + 4loga z - 3logz w
*February 25, 2015 by Annika*

**Math**

Express the following as a logarithm and simplify. 1. log(3x^2 + 11x - 20) - log(3x - 4) 2. 1/6 log3 27 + log3 18 - log3 2 3. log5 cube root of 625 4. 2loga x^3 + 3loga y + 4loga z - 3logz w
*February 26, 2015 by Annika*

**Math - logs**

log_3(2x - 1) = 2, Find x. Here's what I've done: log_3(2x) * log_3(1) = 2 log2x/log3 * log1/log3 = 2 trial and error... log2 (2*1.4)/log3 * 0 = 2.03... x = 1.4 I think I did it wrong because anything that multiplies with 0 gives you 0...
*January 24, 2009 by Anonymous*

**math**

Solve for x in the following equations. (4 marks) log3(x - 5) + log3(x + 3) = 2 <--- both log3.. 3 is subscript log7x + log7(x - 1) = log72x <--- all log7.. 7 is subscript.
*March 19, 2012 by james*

**math**

Write as a single log of a single argument: log3 24 + log3 17 - log3 51
*February 17, 2012 by Bob*

**precalc**

log3 2 +log3 X +log3 (2x-3)=log3 X + log3 (x+1) + log3 (x-1) - log3 (x^2-1)
*October 18, 2010 by sarah*

**Algebra ll**

I need help, can someone guide me through this problem? log3(x + 2) + log3(4x 1) = 5
*March 12, 2014 by Me*

**Math**

Solve for x. log3(x+7)=2-log3(x-1) Write the exact answer using base-10 logarithms.
*February 15, 2011 by Rachal*

**math (pre-calc)**

Solve for x: 1. 3^2x+3^x+1-4=0 2. log3(x=12)+log3(x+4)=2 3. lnx+ln(x+2)=4 4. 3*4^x+4*2^x+8=0
*April 18, 2010 by Rony*

**Algebra 1**

Explain the differences between solving these two equations: log3(x - 1) = 4 AND log3(x - 1) = log34 I think it has to deal with the formulas?
*February 8, 2011 by Andy*

**Algebra 1**

Explain the differences between solving these two equations: Brake down the steps. log3(x - 1) = 4 and log3(x - 1) = log34 )
*February 8, 2011 by Andy*

**Algebra**

Solve the equation. 2log3 y = log3 4+ log3 (y+8) Here's what ive got take out the logs and say y^2= 4+ y +8 which simplifies to (y^2)-y=12 how do i simplfy the y?
*April 30, 2011 by Kenya*

**Andy**

Name: Lesson 3 Assignment.Instructions Explain the differences between solving these two equations: log3(x - 1) = 4 and log3(x - 1) = log34. I think it has to do with the formulas
*February 8, 2011 by andy*

**Math(Please help)**

Solve log3 x + log3 8 = 4
*March 14, 2010 by Hannah*

**Alegbra (logs)**

Please help, I need help on these two problems. Solve the equation. log3(x − 16) = log3(9x) e^1 + ln(7) It appears on the homework that the ln(7) is written like this ^ln(7) but I am still stuck on it. Thanks!
*April 22, 2013 by Karl*

**Calculus**

Find the inverse of each relation: y = (0.5)^(x+2) and y = 3log base 2 (x-3) + 2 For the first one I got y=log base 0.5 (x+2)...but the answer in the back of the textbook says that it is not x+2, but x-2. Can someone tell me why it would end up being x-2 and help me with the ...
*May 6, 2007 by Raj*

**calculus**

1) Solve for x in terms of k: log3(x) + log3(x+7) = k; 3 is the base 2) e^(x+5) = e^(x) + 6, solve for x. Please help, I have no idea how to do these and I've tried several times!
*October 2, 2010 by Cornelius*

**Math- logarithms**

Why is (log3 400)/2 equivalent to log3 20? Can you show me how you can prove that step by step, without a calculator? Thank you so much!
*January 12, 2014 by Anonymous*

**Math**

Solve log3 x + log3 8 = 4
*March 14, 2010 by Hannah*

**math**

Solve for x: log3(x^2-4)-log3(x+2)=2
*February 27, 2011 by julie*

**maths**

1.Log10(x²-12x+36)=2 2.log4 log3 log2 x=0 3.log3 [log9x+1/2+9x]=2x 4.2log4(4-4)=4-log2(-2-x)
*June 26, 2014 by karan*

**Pre-Cal**

1) Solve the equation exactly for x: log3 x - log3(x-3) = 2 I got 1 as an answer. Is this correct? 2) Find the cotangent of the base angle of an isosceles right triangle. sqrt3 / 2. Is this correct?
*March 10, 2010 by Abbey*

**Algebra**

log3 (2x 1) log3 (x 4) = 2
*March 10, 2010 by Kelli *

**Calculus**

log3 x-log3(1-x)=3
*January 17, 2011 by Zukii*

**Precalculus**

log3 (x+1) - log3 (x-3) = 2
*December 11, 2012 by Sarah*

**Math **

I need help for this question. I also need an explanation.The answer says log3(3x^2) but I need an explanation. 1 + log3(x^2) Math - Steve, Saturday, June 27, 2015 at 6:51pm I'm not Carnak the Magnificent. What was the question, and how did you arrive at your answer? We're ...
*June 27, 2015 by Anonymous*

**Math **

I need help for this question. I also need an explanation.The answer says log3(3x^2) but I need an explanation. 1 + log3(x^2)
*June 27, 2015 by Anonymous*

**maths pls help**

1. Solve the following simultaneous equations: log2 xy = 7 log2 (x^2/y) = 5 2. If log y x =a and log z x=b where x is not equal to 1, express the following in terms of a and b: logy (yz) Solve the following simultaneous equations: y = 2 log3 x y+1 = log3 9x Thanks! I tried to ...
*November 21, 2007 by Claire*

**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 dont know..Think u can help?... cheers michelle ...
*October 25, 2006 by TIGGER*

**algebra**

(2*log7 16)/(log3(√10+1)+log3(√10-1)log7 2
*May 18, 2014 by Stasy*

**Math **

what is log3(81)?
*June 27, 2015 by Anonymous*

**precal (log)**

3^(log3(4x)) thank u
*April 8, 2008 by Deb*

**trig**

evaluate log3 27
*October 29, 2008 by jerson*

**Algebra 2**

log5 (log3³)
*June 13, 2012 by Jackie*

**calculus**

Logarithmics: Ie: log3 3^11 : Evaluate? Thanks.
*April 20, 2008 by Pam*

**Trigonometry**

log3(x^2)=2log3(4)-4log3(5)
*July 8, 2011 by Kali*

**Calculus**

s(x)=log3(x^2+6x) find derivative?
*October 14, 2011 by Beth*

**Math**

Transform: log3^4= log(3/4)=
*February 20, 2012 by Harry*

**math equations**

Solve x = log3 15
*June 12, 2012 by jess*

**Pre Cal**

f(x) = log3(93 x + 3 815 x + 3)
*October 2, 2012 by Sally*

**math**

Solve this equation for x Log3^2x+5 =1
*March 29, 2014 by Lindsay*

**Pre-calc/trig**

5=log3(x^2+18)
*January 4, 2015 by Anonymous*

**precalculus**

find the component f and g so that fog =H H(x)=log3 e^x
*November 9, 2011 by tiona*

**Math**

Evaluate the logarithm log3 729
*May 24, 2012 by Neil*

**math**

5/2 - 3/8 log3 plz answer in decimal
*November 29, 2014 by aneesh*

**Math**

I need help solving this logarithmic function: x = log3(4^3).
*January 31, 2008 by Danielle*

**math... precalculus**

how do i solve this equation? log3x+log3(x-24)=4
*November 15, 2009 by alexa*

**calculus**

Suppose that log2 = a and log3 = b Solve for x in terms of a and b: 6^x = 10/3 - 6^-x
*December 6, 2010 by Jenny*

**trig**

solve for x log4 64+ log2 2 ________________ =x log3 81
*February 28, 2012 by Beth*

**maths**

solve the equation log3 (2-3x) = log9 (6x^2-19x+2)
*October 8, 2013 by gibbons1*

**math 12**

log6=x and log8=y, determine an expression for log3 in terms of x an y.
*October 3, 2010 by nat*

**calculus**

what is the derivative of log3(x+X^2) log with base 3 i cant figure it out
*December 5, 2011 by ann*

**algebra 2 trig**

if log3=a then log300 can be expressed as? 1) 100a 2)a+2 3)100+a 4)3a
*January 4, 2014 by nikki*

**Math**

Why is zero not in the doamin of the logarithmic functions y= log3 x and y = log5 x?
*February 24, 2015 by Annika*

**math**

express the following as a single logarithm log2+log3+log4
*April 15, 2013 by kathrine*

**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= x+7 log 6/log 7, I am ...
*October 26, 2007 by Ang*

**Math**

Solve for x: 3^(x+1)=2^x This is what I have so far... (x+1)log3 = xlog2 ...and now I'm stuck. Help plz? Thanks!
*April 11, 2010 by Nikki*

**math**

Given the fuction y = log3(x+3)+2, calculate the zero of the function. GIve an exact answer.
*December 12, 2009 by Cyn*

**math**

Make into one log function: 2logx-log4-log3+logx
*January 10, 2011 by matt*

**Math**

Make into one log function: 2logx-log4-log3+logx
*January 10, 2011 by matt*

**Math**

Make into one log function: 2logx-log4-log3+logx
*January 10, 2011 by matt*

**Precalculus**

Write 4log2+log6-log3 as a single logarithm. Explain with steps please!~~
*January 30, 2012 by Jake*

**college algebra**

solve the equation below. Please show all work. log3(x/2-9)=4
*March 4, 2012 by Tammy*

**Alegbra ck to see if I did it correclty please**

find the exact x log6^36 x= 2 log2^4 x= 2 log3^81 x= 4 Thank you for your help. I am trying.
*May 13, 2014 by Mary Ann *

**Pre-Calc**

Make into one log function: 2logx-log4-log3+logx
*January 10, 2011 by matt*

**math.**

Suppose h(x) = 3x and k(x) = log3(x). What is k(h(x))? What about h(k(x))? Start with a few numbers to convince yourself. Explain completely why this is true.
*March 17, 2010 by Alyssa Pacheco*

**PreCalc**

Write the following expression as one logarithm: 2logx-log4-log3+logx. Simplify your answer.
*January 10, 2011 by matt*

**Logarithmic Algebra**

let log2=a, log3=b, and log5=c. express the indicated logarithm in terms of a, b, and c. log6/25 log 100
*April 9, 2014 by Jen*

**Math**

Solve the logarithmic equation for x. Log3(x^2 − 5x − 9) = 3 I Have no idea
*November 22, 2011 by Anonymous*

**claculus**

graph Y=log3(x+1) graph Y<log2 ^X We can't draw graphs for you here.
*April 27, 2007 by Anonymous*

**Math - Solving Logarithms equation**

Solve the equation below. Please show all of your work. Log3((x/2)-9) = 4
*June 6, 2011 by CheezyReezy*

**math**

I am supposed solve these SYMBOLICALLY but i don't know how since i was never taught in school. Could someone help me solve these? 1. 7(e^(2x))^3 = 35 2. 7^(x^2-x)=7^6 3. log3(5x)=4 Thank YOU very much!!
*August 24, 2010 by Jamie*

**math**

simplify each expression by using properties of logarithms or definitions. check your results using the change of base formula a.) log3 27= b.) log5 (1/5)= c.) if f(x)= ln (x), find f(e^x)
*March 3, 2011 by anonymous*

**mathematics **

Given that log5 3=0.683 and log5 7=1.209.without using calculator,evaluate (a) log5 1.4 b)log7 75 c) log3 125
*April 16, 2014 by jessica*

**math**

Find the value of each of the following. Leave your answers as fractions where appropriate. Do not change bases. a) log4 (1/8) B)10^(-10log3)<---superscript in brackets c.2log3<-----subscript.9 d.log3<---subscript.3^2x
*March 15, 2012 by james*

**Pre-Cal**

Solve the following logarithmic equation. Exact words only: log 3(x+4) = 2+log3(x-20) the 3 in the part of log (3)should be lower just didn't know how to type it in here
*January 1, 2013 by phyllys*

**Algebra check**

Convert to exponential equations. 12.) m=log3 9 I have the answer as 3^m =9 13.) log2 64=6 I have the answer as 2^6 =64 Are these answers right?
*December 1, 2008 by Shawn*

**Algebra 2**

Simplify: 1. 2log10^5+log10^4 2. 2log3^6-log3^4 3. log4^40-log4^5 4. log4^3-log4^48 I need to see all of the steps. Thanks
*May 12, 2011 by Brandon*

**more math**

Are the following statements true ? log(-3) + log(-4) = log12 -log3 - log4 = -log12 Explain why or why not
*December 13, 2009 by Anonymous*

**more math**

Are the following statements true ? log(-3) + log(-4) = log12 -log3 - log4 = -log12 Explain why or why not
*December 14, 2009 by Anonymous*

**Math - Properties of Logarithms**

Use properties of logarithms to find the exact value of the expression. (log3(81)^4
*June 6, 2011 by CheezyReezy*

**pre-calculus**

solve the following logarithmic equation. Be sure to reject any value of x that is not in thedomain of the orginal logarithmic expression. Give the exact answer. log3(x+8)=4 The three actually drops down a little below the g. Can someone tell me how to do this?
*October 6, 2012 by ladybug*

**pre-calculus**

What is the domain and range of log3 (1-x)? I will be happy to critique your thinking. To assist you, consider log (-4) log (0) log 25 Those are to the base 10, changing to another base just changes the numbers, not the function.
*January 13, 2007 by emma*

**Algebra/can you help me**

Write each expression in terms of common logarithms, and then give a calculator approximation (correct to four decimal places). log7^10= 1.183 How do you find the approximation log3^316 = 5.239 How do you find the approximation Thank you
*June 2, 2014 by Mary Ann *

**maths**

how wod i solve the following two eqautions? either exactly or to 3 significant a)2^x = 5 b)3^x+1 = 7 i know a) is 2.32 and b) is 0.771 but i dont know how to show it out step by step in how i worked it out . can sum1 plz help me You have to use logs, and learn how to do that ...
*August 14, 2007 by k*

**maths**

i will be greatful to you if you help in solving the below problems: 1.)Prove that log15=log5+log3 2.)Show that log10800=4log2+3log3+2log5 3.)show that log108/605=2log2+3log3-log5-2log11.
*April 27, 2012 by srikar*

**algebra**

Rewrite the following as an equivalent logarithmic equation.Do not solve. y^t = x answer logy+logt=logx-is this right also Express as an equivalent expression that is a sum of logt (3ab) the t is at the bottom of the g answer log3+loga+logb logarithms.
*May 5, 2010 by dani*

**Math**

Let log 2 = a, log 3 = b and log 7 = c. Express the indicated logarithm in terms of a, b, and c. 1-log3 5 (3 is the subscript of the log) ans:(1-a)/b, i need someone to show me the step bcus my ans is different from the given ans. my ans=(1/a)-b.
*March 28, 2013 by ifi*

**Algebra**

Evaluate the logarithmic equation for three values of x that are greater than 2, three values of x that are between 1 and 2, and at x=2. Show your work. Use the resulting ordered pairs to plot the graph. State the equation of the line asymptotic to the graph. y = log3 (x - 1)
*June 15, 2010 by Bobby*

**Algebra 2**

Express as a logarithm of a single number or expression: 1. 5log4^p+log4^q 2. log10^x-4 log10^y 3. 4log3^A-1/2 log3^B 4. log5^M+1/4 log5^N 5. log2^M+log2^N+3 6. log5^x-log5^y+2 7. 1-3 log5^x 8. (1+log9^x)/2 I need to see all of the steps. Thanks
*May 12, 2011 by Brandon*

**Algebra**

I am having trouble with this one
Can someone please show me the steps, the pairs to plot and the asymptotic? Thank you in advance! Evaluate the logarithmic equation for three values of x that are greater than 2, three values of x that are between 1 and 2, and at x=2. Show ...
*June 16, 2010 by Kris*

**algebra**

I am supposed to write each logarithmic expression as a single logarithm. I have logbase3of13 + logbase3of3 and my answer is logbase3of39. Can I simplify that any further? also logbase3 of 3 is 1 1+ log3 13 is another answer, simpler, to me. oh, okay, so it would make more ...
*April 12, 2007 by Gloria*

**Algebra 2 **

1. Find the midpoint and the distance between the points (8,6) and (13, 4). 1. (4, 3), 10 units 2. 3. 4. (10, 1), 9 units 2. Find the vertex and the focus of the parabola with the equation 4y = x2 12x + 52. 1. V(6, 4), F(6, 5) 2. V(6, 4), F(7, 4) 3. V(4, 6), F(4, 7) 4. V(...
*June 4, 2011 by Ben*

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