Mathematics
walyssa31523
15

Write the sum using summation notation, assuming the suggested pattern continues. -8 - 3 + 2 + 7 + ... + 67

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(1) Answers
Winkey180

This is an arithmetic sequence with common difference 5 Number of terms  = (67 - (-8) / 5 )  + 1 =  = 25 + 1 = 26 S 26  =  (26/2)(-8 + 67)  = 13 *  59 = 767

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