Seudónimo
Seudónimo
28-11-2021
Mathematics
contestada
6+13+20...+(7n-1) Find the sum.
Respuesta :
pcai26
pcai26
28-11-2021
Answer:
2.5n+3.5n^2
Step-by-step explanation:
(6+7n-1)*n/2=2.5n+3.5n^2
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