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anonymous

  • 5 years ago

I'm doing patterns and they want me to find the next term in the following sequence: 3, -9, 27, -81... I first tried 9. That didn't work so I tried -3. It seemed to come out right but teacher said it didn't. I don't want an answer.. I just need help figuring it out.

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  1. anonymous
    • 5 years ago
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    You have a stupid teacher.

  2. anonymous
    • 5 years ago
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    Thanks that really helps... Not.

  3. anonymous
    • 5 years ago
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    each number is -3 times the previous number so the next number is -81*-3 = +243

  4. anonymous
    • 5 years ago
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    Indeed rim, but his/here teacher said it wasn't -3.

  5. anonymous
    • 5 years ago
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    the answer isn't -3 that is the ratio

  6. anonymous
    • 5 years ago
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    Oh.. thanks rim182946! That makes sense. I forgot that two negatives multiplied together make a positive. the reason why my teacher said it was wrong was because I answered -243

  7. anonymous
    • 5 years ago
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    the answer is 243

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spraguer (Moderator)
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is replying to Can someone tell me what button the professor is hitting...

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