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anonymous

  • one year ago

6+2+2/3+2/9+...+a6

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  1. jim_thompson5910
    • one year ago
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    do you see how the pattern is going?

  2. anonymous
    • one year ago
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    no i dont understand it

  3. jim_thompson5910
    • one year ago
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    well each time, the previous term is multiplied by 1/3 to get the next term

  4. jim_thompson5910
    • one year ago
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    example: 6 times 1/3 = 2

  5. anonymous
    • one year ago
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    okay

  6. anonymous
    • one year ago
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    so how would i solve it

  7. jim_thompson5910
    • one year ago
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    what term comes after 2/9 ?

  8. anonymous
    • one year ago
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    im thinking 2/27

  9. jim_thompson5910
    • one year ago
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    yep

  10. jim_thompson5910
    • one year ago
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    and after that?

  11. anonymous
    • one year ago
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    2/71

  12. jim_thompson5910
    • one year ago
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    81, not 71

  13. jim_thompson5910
    • one year ago
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    so we have these 6 terms 6, 2, 2/3, 2/9, 2/27, 2/81

  14. anonymous
    • one year ago
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    okay oh i did the math wrong

  15. jim_thompson5910
    • one year ago
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    now add up the 6 terms

  16. anonymous
    • one year ago
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    and it says round you answer to the nearest tens hundreths

  17. anonymous
    • one year ago
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    i got 64/ 19683

  18. anonymous
    • one year ago
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    is that right

  19. jim_thompson5910
    • one year ago
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    you should get 728/81 when you add up the 6 terms

  20. jim_thompson5910
    • one year ago
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    728/81 = 8.98765432098766 approximately

  21. anonymous
    • one year ago
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    im confused

  22. jim_thompson5910
    • one year ago
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    now just round 8.98765432098766 to the nearest ten-thousandths

  23. jim_thompson5910
    • one year ago
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    where at?

  24. anonymous
    • one year ago
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    how would you round it from where

  25. jim_thompson5910
    • one year ago
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    8.98765432098766 would round to 8.9877 if you round it to the nearest ten-thousandths

  26. jim_thompson5910
    • one year ago
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    find the ten-thousandth's place, then look to the next digit over to see if you round up or not

  27. anonymous
    • one year ago
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    oh if its greater than 5

  28. jim_thompson5910
    • one year ago
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    yes

  29. jim_thompson5910
    • one year ago
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    |dw:1444363023273:dw|

  30. jim_thompson5910
    • one year ago
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    |dw:1444363030825:dw|

  31. anonymous
    • one year ago
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    it said it was wrong

  32. jim_thompson5910
    • one year ago
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    |dw:1444363041738:dw|

  33. jim_thompson5910
    • one year ago
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    what did you type in?

  34. anonymous
    • one year ago
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    yeah i did this 8.9877 and it said it was wrong

  35. jim_thompson5910
    • one year ago
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    can I see a screenshot of the full problem?

  36. anonymous
    • one year ago
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    oh if i get it wrong it goes to the next one but ill show you the next one okay

  37. jim_thompson5910
    • one year ago
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    oh then nvm

  38. jim_thompson5910
    • one year ago
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    post the new question as a new post (on the left side where it says "ask a question") make sure to post the screenshot so the problem is clearly shown and there's no confusion

  39. anonymous
    • one year ago
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    yeah i got another one i need help on

  40. jim_thompson5910
    • one year ago
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    make the new post

  41. anonymous
    • one year ago
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    okay hold on

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