Question

interpole quatro meios aritméticos entre -12 e 48?

Answer 1

a1=-12
an=48
n=6
razão=?

an=a1+(n-1).r
48=-12+(6-1).r
48=-12+5r
48+12=5r
60=5r
r=60/5
r=12

(-12,0,12,24,36,48...)