Question

Hei ! Cum calculez asta ?
Calculati media aritmetica a numerelor a si b , stiind ca a=1supra3 + 12supra5 si b=2supra3 + 3supra5 .

Answer 1

a=1/3+12/5=(5+12x3)/15=41/15
b=2/3+3/5=(2x5+3x3)/15=19/15
Ma=(a+b)/2=(41/15+19/15)/2=60/15:2/1=4/2=2
Ma=2

Answer 2

media aritmetica a doua numere de calculeaza: aduni numerele si suma o imparti la doi:
m. a. la numerele a si b:(a+b):2
a=1/3+12/5=5/15+36/15=41/15=2 11/15
b=2/3+3/5=10/15+9/15=19/15=1 4/15
2 11/15+1 4/15=3 15/15=4
4:2=2
media aritmetica a numerelor a si b este 2