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anonymous

  • one year ago

Find the sum of the first 12 terms of the sequence. 1, -4, -9, -14, . . .

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  1. YoloShroom
    • one year ago
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    alright so, first we have to figure out the sequence, what do you think it is so far? Hint : 1 + x = -4 , -4 + x = -9 ....

  2. anonymous
    • one year ago
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    -9+x=-14?

  3. anonymous
    • one year ago
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    so -5

  4. YoloShroom
    • one year ago
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    Yup! so now that we know how to fnd the next numbers in the sequence we can proceed to find all 12 terms, and add them up

  5. YoloShroom
    • one year ago
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    What did you get? :)

  6. anonymous
    • one year ago
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    is it -338?

  7. YoloShroom
    • one year ago
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    1+(-4)-9-14-19-24-29-34-39-44-49-54 = = -319 i believe. Let me double check my work :)

  8. YoloShroom
    • one year ago
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    I believe it's -319, mind showing me what you did?

  9. anonymous
    • one year ago
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    1,-4,-9,-14,-19,-24,-29,-34,-39,-44,-59,-64 , my bad i accidently typed in this i didnt do 54

  10. YoloShroom
    • one year ago
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    alright, but you understand it right? :) cuz if u need clarification i can easily help you put with that

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