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anonymous

  • one year ago

What is 9th term of the arithmetic sequence whose 2nd and 6th terms are 107 and 87, respectively?

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  1. anonymous
    • one year ago
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    @jakashaka123

  2. anonymous
    • one year ago
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    17?

  3. anonymous
    • one year ago
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    To find the common difference d, use the formula a1+4d=a5. For us, a1 is 10 and a5 is 38. 10+4d=38 Now we can solve for d. 4d=28 d=7 Add the common difference to the first term to get the second term. a2=a1+d=10+7=17

  4. anonymous
    • one year ago
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    yes its 17

  5. anonymous
    • one year ago
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    Otay :)

  6. anonymous
    • one year ago
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    np

  7. anonymous
    • one year ago
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    No its not 17 :P

  8. anonymous
    • one year ago
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    Mike .-. Stop bursting my bubble D':<

  9. anonymous
    • one year ago
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  10. anonymous
    • one year ago
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    I know trust me, ive literally been up 12 hours trying to do this lol. ive been wrong almost all night xD

  11. anonymous
    • one year ago
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    ^^^ are the possible answers.

  12. anonymous
    • one year ago
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    Go slap that h o e they be wrong den!

  13. anonymous
    • one year ago
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    Lmfao

  14. anonymous
    • one year ago
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    ▄︻̷̿┻̿═━一 The H O E ===> ʕ•ᴥ•ʔ

  15. anonymous
    • one year ago
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    (ง'̀-'́)ง

  16. anonymous
    • one year ago
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    Yeah I wish... I dont even know who the hoe is xD

  17. anonymous
    • one year ago
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    His name is sam! ┬┴┬┴┤(・_├┬┴┬┴ S H I T he's coming hide! I gtg ttyl

  18. anonymous
    • one year ago
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    Lol xD

  19. anonymous
    • one year ago
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    @jakashaka123 Can you help?

  20. anonymous
    • one year ago
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    @iGreen @ZeHanz

  21. anonymous
    • one year ago
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    @Vianne can you help?

  22. anonymous
    • one year ago
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    Any help would be great!

  23. ZeHanz
    • one year ago
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    There is no need for formulas in this case, because the numbers are small as are the differences between the terms involved. There are four steps to go from the second to the 6th term. each step is the same size (arithmetic seq). In those four steps you go from 107 to 87, so 20 less. That is 20/4=5 less each step. I think you know now how to find the ninth number :)

  24. anonymous
    • one year ago
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    so 122 then?

  25. ZeHanz
    • one year ago
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    No, because the sequence decreases: 2th term is 107, 6th is 87. Each next term is 5 less than the current one.

  26. anonymous
    • one year ago
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    ops sorry, wrong way, so 72 lmao

  27. ZeHanz
    • one year ago
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    Done!

  28. anonymous
    • one year ago
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    Thank you sooo much :D

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