# Logarithms

336 results

### trigonometry

Use logarithms and the law of tangents to solve the triangle ABC, given that a=21.46 ft, b=46.28 ft, and C=32°28'30" Also Give checks. I know the use of logarithms is unnecessary but i have to show my solution by using logarithms and that's the only reason I'm asking for help...

### kahyla

use the properties of logarithms to write the expression as a sum or difference of logarithms or multiples of logarithms. show your work Ln 8x 2. log2y^5

### trigonometry

okay so i have this trigonometry problem were i HAVE to use logarithms. Now this is my work but can u help me solve it using logarithms. Find the area of the following triangles:(use logarithms) 1) c=426, A=45degrees 48' 36",and B=61degrees 2' 13"

### Logarithms

solve 6 = 15^1-x by using logarithms. Round your asnwer to the nearest thousandth. PLease help?

### Pre-Calc

Assume that x, y, z and b are positive numbers. Use the properties of logarithms to write the expression logb(4) sqrt((x^7 y^2)/(z^4)) in terms of the logarithms x, y, and z.

### Pre-Calc

Assume that x, y, z and b are positive numbers. Use the properties of logarithms to write the expression logb(4) sqrt((x^7 y^2)/(z^4)) in terms of the logarithms x, y, and z.

### math

use the properties of logarithms to write the expression as a sum, difference, and/or constant multiple of logarithms. (Assume all variables are positive.) In 3sqrt t

### math

use the properties of logarithms to write the expression as a sum, difference, and/or constant multiple of logarithms. In( x^2 - 1 over x^3) , x is greater than 1 I really do not understand this problem!!

### Trigonometry (Logarthims)

Give checks to the following two questions Use logarithms and the law of tangents to solve the triangle ABC, given that a=21.46 ft, b=46.28 ft, and C=32°28'30" without logarithms i can do this problem easily and i have. but when i try solving it with logarithms i keep getting...

### Pre Calculus

Assume that x, y, and a are positive numbers. Use the properties of logarithms to write the expression log a 9 xy in terms of the logarithms of x and y. a. 9logbx+9logby b. 19 l o g b ( x + y ) c. 19 l o g b x + l o g b y d. logbx+logby e. 19 l o g b x + 19 l o g b y

### math

My teacher assigned us this problem: Using the following logarithms Log2,log3 and log10 solve for the log150,log 75 incorporating the properties of logarithms ,i tried ,but failed plz help!!

### 10th grade Math

In logarithms, my problem is 2log(subscript 3)n + log (sub 3)5. I know how to add logarithms together, but what do I do with the 2 before the first log?

### Math - Properties of Logarithms

Use properties of logarithms to find the exact value of the expression. (log3(81)^4

### logarithm functions

use the properties of logarithms to expand the expression as sum, difference or multiple of logarithms. Simplify. a.log(x^3/2) b.log base4 16a

### calculus

use the properties of logarithms to condense the logarithmic expression. write the expression as a single logarithms whose coeffient is 1. Inx+In5=? Can you show work

### math

use the power law of logarithms to verify the product law of logarithms for log10^2

### Logarithms

Use the properties of logarithms to find the exact value of the expression log[16]4*log[5]5ã7

### Logarithms

What's the fastest way to find Anti Logarithms(not using interpolation or a log table) can anyone give me an example using any kind of value? (preferably solving triangles)

### Logarithms

What's the fastest way to find Anti Logarithms(not using interpolation or a log table) can anyone give me an example using any kind of value? (preferably solving triangles)

### Logarithms

What's the fastest way to find Anti Logarithms(not using interpolation or a log table) can anyone give me an example using any kind of value? (preferably solving triangles)

### Logarithms

What's the best way to find Angles using logarithms and vice-versa. Ex: log cot 0.1690 and log sin (25degrees 22min) log sin (25+22/60) = log sin 22.3666666667 = sin 0.38053243281 = (-0.41960832236) Is there a simpler way to do these? I get confused with finding the angles ...

### trigonometry

1. Finde the area of the following tringles: (use Logarithms) A) a=12.7, b=21.5, c=28.6. i'm not of the answer i got. i got 127.6 if you got something different can you show me how you did while using logarithms.

### pre calculous

use the properties of logarithms to write the expression as a sum or difference of logarithms or multiples of logarithms. show your work ln x^2/y^3 Assuming x,y AND z are positive use properties of logariths to write the expression as a single logarithm logx+log y 1/3logx 4 ...

### trigonometry (MathMate)

MathMate i would really appreciate if you can show me where the logarithms can be used.I know they are unnecessary and I already found the answer without them but i still have to show my work using logarithms and they just confuse me. I also have most trouble woth the anti-...

### Algebra 2 logarithms

Use the properties of logarithms to evaluate the expression. 1. 5^log(7x) 2. 10^x + 2 log(x)=x+2 or log(x)=x-2 ????

### exact logarithms

Use the properties of logarithms to find the exact value of the expression log[16]4*log[5]sqrt7?

### pre cal

Approximate the following logarithms using the properties of logarithms given logb(2)=0.264, logb(3)=0.419, and logb(5)=0.614. logb(24) =? logb(100) =? logb(5b^3) =?

### Math (Expanding logarithms)

Use the properties of logarithms to expand this functiion? ln[ (x^2+1) (x-1) ] So assuming this is a multiplication problem, I would be using the product rule for expanding logs. I tried applying the product rule but I'm not sure if this is correct or not? ln(x^2+1)+ln(x-1)

### Pre Calculus

Assume that x, y, and b are positive numbers. Use the properties of logarithms to write the expression logb ^8xy in terms of the logarithms of x and y. a. logb^8 + logb x + logb^y b. logb^8+logbx c. logb^8+logby d. logb^8 + log8 x + log8^y e. logb^8+log8xy

### calculus

solve the exponential equation. Express the solution in terms of natural logarithms. e^x=9.2 a. whats the solution in terms of natural logarithms? **is the answer e^9.2 or just e^9 b. type a decimal rounded to 3 decimal places.

### algebra

Solve the exponential equation. Express the solution in terms of natural logarithms. Then, use a calculator to obtain a decimal approximation for the solution. e^x = 20.9 What is the solution in terms of natural logarithms? The solution set is { }.

### Pre Calculus

Assume that x, y and a are positive numbers. Use the properties of logarithms to write the expression loga x ^6y ^7 in terms of the logarithms of x and y. a. 42loga^x+y b. 42loga^x+7loga^y c. 6loga^ x + 42loga^ y d. 6loga^x+7loga^y e. 6loga^x+6loga^y

### trigonometry

Use logarithms and the law of tangents to solve the triangle ABC, given that a=21.46 ft, b=46.28 ft, and C=32°28'30" I have to use logarithms and law of tangents . and then provide the check. which says law of sine or mollweids equation. I can't us the cosine law. If you ...

### Applied calculas

1. Consider the function y = xx (for x > 0). a) Why does the derivative rule for xn not apply? b) Why does the derivative rule for ax not apply? c) What are the four magic properties of logarithms? d) Take the ln of both sides. Use the properties of logarithms and implicit ...

### applied calculus

1. Consider the function y = xx (for x> 0). a) Why does the derivative rule for xn not apply? b) Why does the derivative rule for ax not apply? c) What are the four magic properties of logarithms? d) Take the ln of both sides. Use the properties of logarithms and implicit ...

### Logarithms

1. Find the amount of time required for an investment to double at a rate of 12.3% if the interest is compounded continuously. MY ANSWER: 5.635 yrs 2. Solve e^(0.2x) < 21.2 by using natural logarithms. MY ANSWER: X<15.270 3. Convert log(base 5) 47 to a natural logarithm ...

### trigonometry (repost) Mathmate

I want to start by saying thank you . You have no idea how much u have helped me understand logarithms, even better then the books i have (it poorly explains the subject of trigonometry let alone logarithms and antilog). Your last explanation was very clear and i even ...

### AB Calculus

Assume that x, y, z and b are positive numbers. Use the properties of logarithms to write the expression logb 4(square root)x^7y^2 / z^4 in terms of the logarithms of x, y and z a. 28logbx+8logby-16logbz b. 7/4 logbx+1/2 logby-logbz c. 7/4logb(x+y-z) d. logb x+1/2 logby-logbz ...

### Property of logarithms

Using property of logarithms, how do I prove derivative of ln(kx) is 1/x First observe that ln(kx) = ln(k) + ln(x) then take derivatives. The ln(k) is simply a constant so it goes away. You could also derive it as d/dx ln(kx) = 1/kx * k by the chain rule. To see that the ...

### 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. -21.044=log(P/30) <...

### Algebra-please check my answers

Solve the equation by expressing each side as a power of the same base and then equating exponents. 9^(x - 9)/8= sqrt of 9 i got 13 4^(x + 10) = 8^(x - 6) i got 38 Solve the exponential equation. Express the solution set in terms of natural logarithms. 2^8x = 4.5 i got {ln 4.5...

### logarithms

3^x=6

### algebra

Logarithms: a)

### Logarithms

Solve for x: {{{ln(x)+x=5}}}

### Maths

Logarithms

### Logarithms

log8(8^2) − ln(e^0.5)

### math

logarithms solve for x 5^(x-1) = 9

### algebra logarithms

log5 x=2

### Logarithms

Determine if x=0.6 is a root of 4^(2x)=5

### Math

I'm doing logarithms. Solve: 2^(6x-1)=28

### Math - Logarithms

How do you solve 7^(3x) = 8^(2x)

### Logarithms

Solve 7^3x=623

### Logarithms

How do you expand ln15x? thanks :)

### Logarithms

8log8(5) − log8(7) = ?

### Math

Given the product law of logarithms, prove the law of exponents. Given the quotient law of logarithms, prove the quotient law of exponents.

### Logarithms

Can someone explain to me why ln e^5 equals 5?

### math

how do i solve this using logarithms: 1) 4^(x)=8 2) 2^(x) * 8^(-x)= 4^(x)

### MATH - logarithms

solve for x. 485 * 5^x+2 = 12^2x-1

### college algebra

help solve 8=2^5x * 4^x^2 logarithms

### Algebra Logarithms

logx+log(x+3)=1

### algebra II logarithms

f(x)=log4 (x)+3 how could i get this so i could graph it?

### Logarithms

Solve Log base 10^x=4

### Logarithms

if loga(b)=1/48 what is the value of logb(a^2) ?

### math- logarithms

how do i solve these logs? log1/2 (3x+1)^1/3= -2 3^(x^3)= 9^x

### logarithms

how do i solve: log4x^3 + log2x^1/2 = 8 please help me

### Pre Calculus

Logarithms Solve the equation for x 1-ln(3x+2)=0

### Algebra

Can logarithms have negative answers?

### Precalc: Logarithms

Solve for x? xln(x) + 1 > x + ln(x) e^1/x > 1 Any help would be appreciated. THANK YOU!

### math

Using logarithms, find w to the nearest hundredth: 5^(2w) +9=40?

### math

how to solve logarithms symbolically? log17(17)^(x+3)= log7(1) thank you

### MATHS

Evaluate with the help of Logarithms 1) 2391/3072 2.38*3.901/4.83

### math

Apply logarithms to create a linear relationship: ((x^3)(y^1.5))/(z^.5)=k

### algebra II

use the properties of logarithms for the expression. 5^log5(7x)

### Hard math

Solve for x using the laws of logarithms. ln(ln x)= 1

### math

Use logarithms to solve expenential equqtion 5^x=30

### math

Use logarithms to solve expenential equation 5^x=38

### math

Calculate the expression in common logarithms. log (80)= 6

### Math

Solve for t using natural logarithms. 7e^3t = 10e^2t

### precal

how do you find an exponent variable without logarithms? ex. 8.2=1.65(0.8)^n-1 thanks

### trigonometry (repost) Mathmate

Use logarithms and the law of tangents to solve the triangle ABC, given that a=21.46 ft, b=46.28 ft, and C=32°28'30" Using the previous values, a=21.46 b=46.28 C=32-28-30=32.475 We have A+B=180-32.475=147.525 a+b=67.74 a-b=-24.82 tan((A+B)/2)=3.433633 tan((A-B)/2)=tan((A+B)/2...

### Algebra help

Express in terms of logarithms of a, b, and c: log(a^3b^2)/c How would I convert this?

### Algebra Help

Express in terms of sums and differences of logarithms: log_a x^3 y^2 z

### Algebra 2

Find the solution of the exponential form in terms of logarithms 2^(2x+13) = 3^(x-45)

### algebra 2

Use the properties of logarithms to evaluate the expression. 5 log5 (7x)

### logarithms

how to wirte 3log(s)-4log(c)+2log(t-4) as a single logarithm. Thanks

### Logarithms

help- e^1-5x=3 find solution to 4 decimal places. I don't know how to type it in to my calculator!

### Pre-Calc/Trig...

Use the rules of logarithms to expand [(x+3)^4(x-5)^7]

### Math

solve the exponential function for x by using common logarithms. 5^x=50^x+1

### Algebra

Please express in terms of sums and differences in logarithms. log a x^3 y^2 z

### Math

I need to solve for t in the following expression. A/(1+B^t/2) = C using logarithms. how do I get started

### Math

How would you solve: Ln[e^5x/x(x^4+1)] in a form with no logarithms of products, quotients, or powers?

### Logarithms

log4(10)=x Im having trouble getting started here with this question thanks

### Algebra 2

Solve each equation below for x. (Use logarithms.) 10^(2x^(2)-5x+11) = 10000 9^(2(x-1)) = √(27)

### Intermediate Algebra (college)

Use the properties of logarithms to condense the expression 1/3[ln(x - 6)- 4 ln y - 2 ln z]

### math30

LOGARITHMS AND EQUATION SOLVING Solve for x. Round to the nearest hundredth. 2^(x+3) = 17^(x)

### math

Is log_3 (5) equal to log_5 (3)? Explain your answer. Do not evaluate the logarithms.

### Logarithms

Express y as a function of x. What is the domain? Explain your answer. log4y = x + log4

### Math

solve the exponential function for x using base 5 logarithms. 5^x+4=125^1-3x

### math B-logarithms

im having a quiz on this tom and i don't understand it at all! Can sum1 explain it to me?