Question

Nome 1° Kesley Borger 1. Quantos termos a P.A. (5, 9, 13,...,37) possui?​

Answer 1

$> \: resolucao \\ \\ \geqslant \: progressao \: aritmetica \\ \\ r = a2 - a1 \\ r = 9 - 5 \\ r = 4 \\ \\ = = = = = = = = = = \\ \\ an = a1 + (n - 1)r \\ 37 = 5 + (n - 1)4 \\ 37 = 5 + 4n - 4 \\ 37 = 1 + 4n \\ 37 - 1 = 4n \\ 36 = 4n \\ n = \frac{36}{4} \\ n = 9 \\ \\ resposta \: > \: pa \: de \: 9 \: termos \\ \\ \geqslant \leqslant \geqslant \leqslant \geqslant \leqslant \geqslant \geqslant$