Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

rosedewittbukater Group Title

Algebra 2 help please? And explanation too. Thanks! 5. Solve the logarithmic equation. Round to the nearest ten-thousandth if necessary. 2 log 4 – log 3 + 2 log x – 4 = 0 (1 point) 12.3308 43.3013 86.6025 1,875

  • one year ago
  • one year ago

  • This Question is Closed
  1. matricked Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    use log a+log b=log ab and log a- log b= log (a/b)

    • one year ago
  2. campbell_st Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    ok, can I just check the equation is it 1. \[2 \log(4) - \log(3) + 2\log(x) - 4 = 0\] or 2. \[2 \log(4) - \log(3) + 2\log(x - 4) = 0\]

    • one year ago
  3. matricked Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    thus here we have 2 log 4 – log 3 + 2 log x – 4 =0 or log (4^2*x^2 )/3 = 4 [nlog a =log a^n] and log 1=10 as the base must be 10 here ]

    • one year ago
  4. rosedewittbukater Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    @campbell_st Honestly I'm not really sure. It's a question for my online school and it doesn't specify what it is, but I'm assuming it's (x-4). I guess we can know which it is if there's no answer choice.

    • one year ago
  5. matricked Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    2 log 4 – log 3 + 2 log x – 4 =0 log (4^2*x^2 )/3 = 4 log (4^2*x^2 )/3 =4 log 10 [as log10=1] log (4^2*x^2 )/3 = log 10000 or 16x^2/3 =10000 or x^2 =10000/16 *3 or x^2 =1875 hence x=sqrt(1875) =43.3013

    • one year ago
  6. matricked Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    @campbell_st u were right in interpreting the question but it is as it was

    • one year ago
  7. campbell_st Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    makes sense to me

    • one year ago
    • Attachments:

See more questions >>>

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.