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help_people

  • one year ago

The tenth, eleventh, and twelfth terms of a sequence are shown in the table below: Term number 10 11 12 Term -34 -38 -42 Which of the following shows the first five terms of the sequence? -2, 2, 6, 10, 14 2, -2, -6, -10, -14 -2, -6, -10, -14, -18 2, 6, 10, 14, 18

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  1. welshfella
    • one year ago
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    note that to get from one term to the next you subtract 4

  2. help_people
    • one year ago
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    ?

  3. welshfella
    • one year ago
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    -34 -4 = -38 -38-4 = -42

  4. welshfella
    • one year ago
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    this is an arithmetic sequence where the common difference is -4

  5. help_people
    • one year ago
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    ok

  6. welshfella
    • one year ago
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    so what do you think the 9th term is ? you subtract 4 to get the 10th so we can write -34 + 4 = a9 where a9 is the 9th term

  7. help_people
    • one year ago
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    -30

  8. welshfella
    • one year ago
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    right now you can keep on adding 4 until you get to the 5the term and see if it matches one of the options

  9. help_people
    • one year ago
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    a

  10. help_people
    • one year ago
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    is the answer

  11. welshfella
    • one year ago
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    no- you are guessing 8th term = -30 + 4 = -26 7th term = 26 + 4 = -22 - can you continue?

  12. help_people
    • one year ago
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    no I'm not i did kt

  13. welshfella
    • one year ago
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    ok

  14. help_people
    • one year ago
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    -22+4=-18 -18+4=-14 -14+4=-10 -10+4=-6 -6+4=-2 -2+4=2

  15. help_people
    • one year ago
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    see

  16. welshfella
    • one year ago
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    right sorry!

  17. help_people
    • one year ago
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    :D i chose the wrong one(my mistake) it looks like c but is missing 2

  18. welshfella
    • one year ago
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    you got there its B

  19. help_people
    • one year ago
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    thank you

  20. help_people
    • one year ago
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    may you help me w. another?

  21. help_people
    • one year ago
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    @welshfella

  22. welshfella
    • one year ago
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    ok

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