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Adam1994

  • 4 years ago

please see the attachment and help??

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  1. Adam1994
    • 4 years ago
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    \[\sum_{i=-2}^{1}i+4\]

  2. mas_gh90
    • 4 years ago
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    -2+(-1)+0+1+4=2

  3. Adam1994
    • 4 years ago
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    th options are 6, 9, 10, 14

  4. mas_gh90
    • 4 years ago
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    so sorry!for my foolish mistake! (-2+4)+(-1+4)+(0+4)+(1+4)= 14

  5. Adam1994
    • 4 years ago
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    ha its cool, and thanks!

  6. Adam1994
    • 4 years ago
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    \[\sum_{i=-4}^{-2}-4i\]

  7. Adam1994
    • 4 years ago
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    Can u try this one?

  8. mas_gh90
    • 4 years ago
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    sorry I think it's to late to answer your question but your answer is 8 I think: -4(-2+(-1)+0+1)=8

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