Question

Escreva um P.A. de 8 termos A6= 19 ER=2

Answer 1

Resposta:

PA(9, 11, 13, 15, 17, 19, 21, 23)

Explicação passo a passo:

Escreva um P.A. de 8 termos onde $a_6=19~~e~~r=2$

$a_6=a_1+5r\\\\a_1+5.2=19\\\\a_1+10=19\\\\a_1=19-10\\\\a_1=9$