Question

encontre o 15° termo da progressão aritmética (1,4,7,10,13,16,...)​

Answer 1

$> \: resolucao \\ \\ \geqslant \: progressao \: \: aritmetica \\ \\ r = a2 - a1 \\ r = 4 - 1 \\ r = 3 \\ \\ = = = = = = = = = = = = = = = = = \\ \\ > \: o \: 15 \: termo \: da \: pa \\ \\ an = a1 + (n - 1)r \\ an = 1 + (15 - 1)3 \\ an = 1 + 14 \times 3 \\ an = 1 + 42 \\ an = 43 \\ \\ \geqslant \leqslant \geqslant \leqslant \geqslant \leqslant \geqslant \leqslant \geqslant \geqslant$