marcyteach marcyteach

18-03-2019
Mathematics

contestada

Find the sum of the first 9 terms of the sequence. Show all work for full credit. 2, -7, -16, -25, ... (2 points)

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valenciateoyuxuan valenciateoyuxuan

18-03-2019

2-(-7)=9

(-7)-(-16)=9

For each of the terms, the number will decrease by 9. The first 9 terms will be: 2,-7,-16,-25,-34,-43,-52,-61,-70. The sum of these numbers will be - 306.

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