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InsanelyChaotic Group Title

WHAT did I do wrong here? :( What is the 9th term of the geometric sequence where a1 = -6 and a6 = -6,144? First term: -6 Ratio: -1024 N= 9

  • one year ago
  • one year ago

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  1. InsanelyChaotic Group Title
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    Did I mess up on the ratio part?

    • one year ago
  2. hartnn Group Title
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    yes :P

    • one year ago
  3. InsanelyChaotic Group Title
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    LOL let me revise

    • one year ago
  4. hartnn Group Title
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    can i tell you how can you get it ?

    • one year ago
  5. InsanelyChaotic Group Title
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    0.000097

    • one year ago
  6. InsanelyChaotic Group Title
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    -6 divided by (-6144)??

    • one year ago
  7. timo86m Group Title
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    i did this one for you

    • one year ago
  8. hartnn Group Title
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    no.... common ratio = next term/ previous term a1 and a6 are not consecutive terms

    • one year ago
  9. InsanelyChaotic Group Title
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    wait huh??? then what is???

    • one year ago
  10. timo86m Group Title
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    http://openstudy.com/study#/updates/5140bf27e4b0f08cbdc91cc0

    • one year ago
  11. hartnn Group Title
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    you'd find common ratio =r by, an = a1 r^{n-1} here, and only for this, n=6 a1=-6 always an=a6 =-6144

    • one year ago
  12. InsanelyChaotic Group Title
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    so n = 6 temporarily?

    • one year ago
  13. hartnn Group Title
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    yes, only to find the value of 'r'

    • one year ago
  14. InsanelyChaotic Group Title
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    ok:)

    • one year ago
  15. InsanelyChaotic Group Title
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    http://www.basic-mathematics.com/geometric-sequence-calculator.html

    • one year ago
  16. InsanelyChaotic Group Title
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    huh???????????/ ^

    • one year ago
  17. hartnn Group Title
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    don't use that.

    • one year ago
  18. InsanelyChaotic Group Title
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    Oh?

    • one year ago
  19. hartnn Group Title
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    plug in values in the formula and use other calculator or google.

    • one year ago
  20. InsanelyChaotic Group Title
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    okay

    • one year ago
  21. InsanelyChaotic Group Title
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    I don't know how to get this

    • one year ago
  22. hartnn Group Title
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    what u got after plugging in ?

    • one year ago
  23. InsanelyChaotic Group Title
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    First term: 625 Ratio: -6144 N= 9

    • one year ago
  24. InsanelyChaotic Group Title
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    I got numbers that were entirely off

    • one year ago
  25. InsanelyChaotic Group Title
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    in the 8 millions

    • one year ago
  26. InsanelyChaotic Group Title
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    8 thousands rather*

    • one year ago
  27. InsanelyChaotic Group Title
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    = -393,216

    • one year ago
  28. hartnn Group Title
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    ratio is not -6144 ratio = r is what you have to find

    • one year ago
  29. InsanelyChaotic Group Title
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    Really?????

    • one year ago
  30. InsanelyChaotic Group Title
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    ughhhh oh my god

    • one year ago
  31. hartnn Group Title
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    |dw:1363206281770:dw| did you get this step ?

    • one year ago
  32. InsanelyChaotic Group Title
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    no

    • one year ago
  33. hartnn Group Title
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    a1=-6 n=6 an=a6=-6144

    • one year ago
  34. InsanelyChaotic Group Title
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    ohhhh yes yes!!!

    • one year ago
  35. InsanelyChaotic Group Title
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    what do i do after the -6144

    • one year ago
  36. hartnn Group Title
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    you mean you want next step ? or right side of same step ?

    • one year ago
  37. InsanelyChaotic Group Title
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    the next step please:)

    • one year ago
  38. InsanelyChaotic Group Title
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    my notes are progressing!!

    • one year ago
  39. hartnn Group Title
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    |dw:1363206708125:dw| got this ?

    • one year ago
  40. InsanelyChaotic Group Title
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    -6144/ -6 ?

    • one year ago
  41. InsanelyChaotic Group Title
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    what is that loop thing?

    • one year ago
  42. hartnn Group Title
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    on right side ? its 'r' r^5

    • one year ago
  43. InsanelyChaotic Group Title
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    it looks like a deformed male genital

    • one year ago
  44. hartnn Group Title
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    lol :P

    • one year ago
  45. InsanelyChaotic Group Title
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    ohhhhhhhh!!!!!!! R

    • one year ago
  46. hartnn Group Title
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    yes, r = common ratio

    • one year ago
  47. InsanelyChaotic Group Title
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    got the step:)

    • one year ago
  48. hartnn Group Title
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    can you find 'r' from that ?

    • one year ago
  49. InsanelyChaotic Group Title
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    yes let me try

    • one year ago
  50. InsanelyChaotic Group Title
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    1024^5 = 1.1258999e+15

    • one year ago
  51. hartnn Group Title
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    its 1024 =r^5 not 1024^5

    • one year ago
  52. InsanelyChaotic Group Title
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    huh?

    • one year ago
  53. hartnn Group Title
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    \(1024 =r^5 \) taking 5th root on both sides, \(\large r= \sqrt[5]{1024}=..?\)

    • one year ago
  54. InsanelyChaotic Group Title
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    let me see

    • one year ago
  55. InsanelyChaotic Group Title
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    i dont know

    • one year ago
  56. hartnn Group Title
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    try this : \(r^5=1024=2^{10} \\ r^5= (2^2)^5 \implies r=2^2=4\)

    • one year ago
  57. hartnn Group Title
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    got how r=4 ?

    • one year ago
  58. InsanelyChaotic Group Title
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    yes

    • one year ago
  59. hartnn Group Title
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    good! so, now we have r=4 a1=-6 n=9 find an ?

    • one year ago
  60. InsanelyChaotic Group Title
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    no

    • one year ago
  61. hartnn Group Title
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    you can use that link.... or the formula

    • one year ago
  62. InsanelyChaotic Group Title
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    okay:) Ratio = 4?

    • one year ago
  63. hartnn Group Title
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    yes, common ratio = r= 4 is what we found out.

    • one year ago
  64. InsanelyChaotic Group Title
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    3603000625

    • one year ago
  65. hartnn Group Title
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    no...what values you put ?

    • one year ago
  66. hartnn Group Title
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    i got : The 9th term is -393216

    • one year ago
  67. InsanelyChaotic Group Title
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    I made a few minor errors but i fixed it

    • one year ago
  68. hartnn Group Title
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    great! any more doubts ?

    • one year ago
  69. hartnn Group Title
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    phew! this took an hour!

    • one year ago
  70. InsanelyChaotic Group Title
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    hahahh so so sorry!!!!!!!!!

    • one year ago
  71. InsanelyChaotic Group Title
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    you are literally THE BEST

    • one year ago
  72. hartnn Group Title
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    not really, but i'll take the compliment ;) Thanks :D

    • one year ago
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