Question

Calcule o vigésimo quinto termo da pa (_5,_3,_1,1)

Answer 1

Resposta:

a25=43

Explicação passo a passo:

r=a2-a1

r=-3+5=2

a25=a1+24r

a25=-5+24.(2)

a25=-5+48 = 43

Answer 2

$\geqslant resolucao \\ \\ > o \: 25 \: termo \: da \: pa \: ( - 5. - 3. - 1.1...) \\ \\ r = a2 - a1 \\ r = - 3 - ( - 5) \\ r = - 3 + 5 \\ r = 2 \\ \\ \\ an = a1 + (n - 1)r \\ an = - 5 + (25 - 1)2 \\ an = - 5 + 24 \times 2 \\ an = - 5 + 48 \\ an = 43 \\ \\ \geqslant \leqslant \geqslant \leqslant \geqslant \leqslant \geqslant \leqslant \geqslant$