Question

interpolar quatro meios aritméticos entre 3 e 38

Answer 1

a1 = 3
an = 38
n = 6
r = ?

an = a1 + (n - 1)r
38 = 3 + (6 - 1)r
5r = 38 - 3
r = 35/5
r = 7

PA(3,10,17,24,31,38)