A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

Hey Can some one help me please? I'll give a Medal. What is the 50th term in this sequence that begins -6, 0, 6, 12

  • This Question is Closed
  1. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @k_lynn

  2. mathmate
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    to check, you can substitute one or two terms.

  3. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    That wasnt right i'll get you my answer chocies. 292 288 286 290

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

    @k_lynn

  5. mathmate
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Let's say the sequence is a1=-6 a2=0 a3=6 a4=12 We try to make a rule such that all four terms are satisfied. Common difference =12-6=6-0=....=6 so the sequence is an=6n+k, but we don't know k yet, so substitute the first term: a1=6(1)+k=-6 Solve for k to get k=-6-6(1)=-12 We have thus established that the rule is: \(\Large a_n=6n-12\) Check for n=4 a4=6(4)-12=24-12=12.. yay!

  6. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    i don't get it

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

    @kitty_eubanks

  8. mathmate
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    For the 50th term, put n=50 in the rule! \(\Large a_{250} = ?\)

  9. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so it would be 286?

  10. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I think i'm doing something wrong?

  11. mathmate
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    \(\Large a_{250} = 6*50-12 = ?\)

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

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

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.