Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

sasogeek

  • 2 years ago

log2=0.3010 log3=0.4771 simplify log20 I'm stuck at log2+log2+log5, if i split up the log5, i would get log(2+3) but that isn't the same as log2+log3 so i'm probably missing something or using the wrong factors to start with... what am i supposed to do?

  • This Question is Closed
  1. dumbcow
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    i think you are right, there is no way of getting log(20) in terms of log(3)

  2. sasogeek
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 4

    thanks for the confirmation, i thought i was lost

  3. Mimi_x3
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    But i think you can with \[\log(4*5) = \log4 + \log5\]

  4. sasogeek
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 4

    it's the same thing i expanded, but apparently you're supposed to use the values they gave you...

  5. Mimi_x3
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    ohh, but 2 and 3 won't work; so i thought of another approach..

  6. Pramudya
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    probably, u can use log 60 = log 2 + log 3 + log 10. It has the same meaning with log 60 = 2*log 2 + log 3 + log 5. so u can getting log 5 there. Compare log 60 = log 2 + log 3 + log 10.......(1) log 60 = 2*log 2 + log 3 + log 5.....(2) so log 2 + log 3 + log 10 = 2*log 2 + log 3 + log 5 log 5 = log 2 + log 3 + log 10 - 2*log 2 - log 3 then u can getting log 5 from here. log 20 = 2*log 2 + log 5 then substitute log 5, that we have had found. Perhaps, the way that i had given to u, can helping u to solve this problem. Thank you

  7. Callisto
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    log20 = log(2x10) = log2+log10 = log2+1 = 0.3010 +1 = 1.3010 then you can finish the task with the given value the a truth :)

  8. Callisto
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    it doesn't state that you must use the value log3 !

  9. Pramudya
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    wow, amazing. how fool i am. i was thinking too far. hehe

  10. Chlorophyll
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    20 = 2 * 10 -> log( 2 * 10) = log2 + log10 = .3010 + 1 = 1.3010

  11. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Ask a Question
Find more explanations on OpenStudy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.