Question

Interpolar 6 meios aritméticos entre 9 e 30

Answer 1

9 -------------------------------------------------------------  30

a1 = 9 ; an = 30 ; n = 6 + 2 = 8

an = a1 + (n -1) r

30 = 9 + 7r
r = 21/7

r = 3
 

 9 ; 12 ;15 ; 18 ; 21 ; 24 ; 27 ; 30