Respostas

2014-05-14T20:49:46-03:00
ISSO E PROGRESSAO ARITIMETICA?

2014-05-14T20:54:44-03:00
An= a1 + (n-1).r
Termo 12
An = 3 + ( 12-1) . 3
An = 3 + 11.3
An = 36

Termo 15
An = 3 + ( 15-1 ) . 3
An = 3 + 14.3
An= 3 + 42
An = 45