Question

Interpolar 10 meios aritméticos entre 2 e 57 , primeiro termo igual a 2

Answer 1

a1:2
an:57
n:12
r: ?
an =a1+(n-1)×r
57=2+(12-1)×r
57=2+11×r
57 -2=11r
55=11r
55÷11=r
r=5
meios (2, 7, 12, 17, 22, 27, 32, 37, 42, 47, 52, 57)