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Leviafan [203]
3 years ago
6

Calcule a soma dos 50 termos da PA (-5, -7, -9,...).

Mathematics
1 answer:
tatyana61 [14]3 years ago
4 0
The first term is -5, the 50th term is -5-2*49=-103
The sum is the average of these terms times number of terms, which is (-5-103)/2*50=-2700
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