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Mathematics 21 Online
OpenStudy (anonymous):

Write the sum using summation notation, assuming the suggested pattern continues. -9 - 4 + 1 + 6 + ... + 66

OpenStudy (anonymous):

where did the 5 come from? I've never had these type of math problems before

OpenStudy (dan815):

|dw:1381957852066:dw|

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