A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

what is s10 for 1+4+16+64+......?

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

    hai ganeshie

  2. ganeshie8
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    hey!

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

    help? :P can i also have steps so i know wit I'm doing?

  4. ganeshie8
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    lets see, do you notice any pattern in the given series ?

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

    ya multiply 4

  6. ganeshie8
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Right, \(S_{10}\) means the sum of first \(10\) terms : \[S_{10} = 1 + 4 + 4^2 + 4^3+\cdots + 4^8 + 4^9\] just check if we have exactly \(10\) terms in above sum

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

    ._.

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

    so is there a formula or something? cause this is way too long

  9. ganeshie8
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Need more than two dots and a hyphen to continue assist you .-.

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

    ._. thats all i got

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

    BRUH U DASHED OFF WHEN U COULDNT HELP ME?!!

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

    help :(

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

    note: This is a geometric progression :) So, if you want to find the sum of the first 10 terms, you would use this formula: \[S_n = \frac{ a(1-r)^n }{ 1-r }\] n = nth term, r = common ratio, a = first term

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

    Geometric progress question...

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

    oops i typed it wrong. Give me a minute

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

    *\[S_n = \frac{ a(1-r^n) }{ 1-r }\]

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

    that is the sum formula LOL

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

    \[a_n=a_1(r ^{n-1})\]

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

    so if i use this i get \[S10=\frac{ 1(1-4^2) }{ 1-4 }\]

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

    5 and it doesnt make sense?

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

    ?

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

    how did you get the 4^2 part?

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

    he put it inside the parentheses instead of outside

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

    4^10

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

    SRRY

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

    caps

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

    yes it should be 4^10 :) Nowwww, simplify

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

    349525?

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

    excellent :)!

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

    yea...i initial thought it was asking for the 10th term lool

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

    YAY! THNX :3

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

    until i saw its S not a

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

    no worriesss ^_^!

  34. 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.