13. Calculati media aritmetica a numerelor

Răspuns:
a) M=12+18/2=30/2=15
b)M=204+305/2=509/2=254,5
c)M=7+8,4/2=15,4/2=7,7
la d nu se vede
e)M=10,5+47,34/2=57,84/2=28,92
f)M=10,12+30,2/2=40,32/2=20,16