Respostas

2014-03-06T07:29:00-03:00
a1 = 600
a144 = ?
r = 5

a144 = 600 + 143 x 5
a144 = 600 +715
a144 = 1315

Sn=(a1+an).n/2
Sn=(600+1315).144 / 2
Sn=137880,00

1 5 1