A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

Please help!! Write the sum using summation notation, assuming the suggested pattern continues. -9 - 4 + 1 + 6 + ... + 66

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

    so you start at -9 and roll to 66 at steps of 5

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

    Ok. So would the answer be: summation of the quantity negative nine plus five n from n equals zero to infinity

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

    \[\sum_{n=-9}^{\infty}\]

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

    all my answer choices have n=0, then infinity or 15 at the top, and on the side: -45n or (-9+5n). So I thought I would have: infinity at the top, n=0 at the bottom, and (-9+5n) on the side.

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

    \[\sum_{k=0}^{\infty} = -9+(k-1)5\]

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

    change the k to n

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

    wait... that would mean n=0 is -14

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

    \[\sum_{n=0}^{\infty} = -4+(n-1)5\]

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

    that's not an answer choice

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

    that way n=0 is -9

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

    what choice do you have?

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

    a. summation of negative forty five times n from n equals zero to fifteen b. summation of the quantity negative nine plus five n from n equals zero to fifteen c. summation of the quantity negative nine plus five n from n equals zero to infinity d. summation of negative forty five times n from n equals zero to infinity

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

    looks like c if you want -9 to infinity

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

    That's what I thought.

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

    it works too

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

    just tested it

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

    That wasn't correct. Could it be b?

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

    yea 0 to 15 gives to -9 to 66

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

    b* dayum i soo sleepy i saw 0 as b

  20. 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.