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Mathematics 9 Online
OpenStudy (anonymous):

Write the sum using summation notation, assuming the suggested pattern continues.1 - 3 + 9 - 27 + ...

OpenStudy (anonymous):

SOOO LOST

OpenStudy (anonymous):

-3^0, -3^1, -3^2,......... we noticed that sign alternate

OpenStudy (anonymous):

|dw:1373659254493:dw|

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