Respostas

  • PeH
  • Ambicioso
2013-04-27T12:07:43-03:00

\bigcirc \ P.A. = (3, 9, 15, ...)

 

\cdot \ a_{100} = ?

 

\cdot \ a_1 = 3

 

\cdot \ n = 100

 

\cdot \ r = 6 , pois  9 - 3 = 6  ou 15 - 9 = 6

 

\blacktriangleright a_n = a_1 + (n - 1) \cdot r define o termo geral da P.A.:

 

a_{100} = 3 + (100 - 1) \cdot 6

 

a_{100} = 3 + 99 \cdot 6

 

a_{100} = 3 + 594

 

a_{100} = 597

 

Opção d) 597