Question

obtenha o 30 termo da PA (192,173,...)?

Answer 1

$a_n=a_{30}=? \\ a_1=192 \\ n=30 \\ r=173-192=19 \\ \\ Termo~~geral \\ \\ a_n=a_1+(n-1)r \\ \\ a_{30}=192+(30-1)(19) \\ a_{30}=192+(29)(19) \\ a_{30}=192+551 \\ \\ a_{30}=743$