Question

Media aritmetica a nr.a si b=3,6,m.a b si c=4,2, a si c=5,4

Answer 1

(a+b):2=3.6
(b+c):2=4.2
(a+c):2=5.4
a+b=7.2
b+c=8.4
a+c=10.8
a+b+a+c=7.2+10.8
2a+b+c=18
2a+8.4=18
2a=18-8.4
2a=9.6
a=9.6:2
a=4.8
4.8+b=7.2
b=7.2-4.8
b=2.4
4.8+c=10.8
c=10.8-4.8
c=6