math

posted by .

logarithm base 20 of 39

  • math -

    20^log20(39) = 39

    log20(39) * log10(20) = log10(39)
    so
    log20(39) = log10(39)/log10(20)

    = 1.59/1.30

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Review of Logs

    I can't seem to get the answer to this; the answer key says log(base 8)6 Write as a single logarithm log(base 8)42log(base 8)3 - log(base 8) 6 I'm hoping the key is wrong :) Thank you for your help!
  2. math

    given that c is the logarithm of x in base a, and d is the logarithm of x in base b, find the general statement that expresses the log of x ib base ab, in terms of c and d. I couldn't include subscripts, but here are what the logs …
  3. pre-calculus

    given that c is the logarithm of x in base a, and d is the logarithm of x in base b, find the general statement that expresses the log of x in base ab, in terms of c and d. [*subscripts not included: a,b,ab] loga_x=c ; logb_x=d ...logab_x …
  4. math

    if y is equal to the logarithm of x to the base 5, what is the logarithm of x to the base 25 in terms of y?
  5. math

    how do i solve this logarithm log(base 9)X + 3log(base 3)X = 14
  6. math

    use the change-of-base formula to write the given logarithm as a multiple of a common logarithm. In 5
  7. math

    Use the Laws of logarithms to rewrite the expression log(base 2)(11x(x-9)) 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)?
  8. Math 120

    Write 4logb(X)-1/3logb(y)+2logb(z)as a single logarithm Its log base b.
  9. Math 10

    Express as sum or difference of logarithm log of x(3x-5) to the base of 4
  10. logarithm

    If log base 2 of x and log base 2 of y are distinct positive integers and log base x of 2 plus log base y of 2 equal to 0.5. xy=?

More Similar Questions