19-12-2016
Mathematics

contestada

Find the sum of the first fifteen terms of an arithmetic sequence if the middle term is 92.

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mayyavildenbruc mayyavildenbruc

19-12-2016

I'll try to explain this as much as possible but 92 is x but you don't know y
so it would be dermined this way I hope this makes sense
15-8=7 So, this would mean that the term is 7th in place.
92-7y+92+7y=92+92=184

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