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1.Calculeaza media aritmetica a nr.:
a)5,8(3) si 2,1(6)
b)5,1(40,8,5(7) si 4,2(3).


Răspuns :

a) ma =(5.8(3) +2,1(6))/2 => (583-58/90+216/90)/2
=(720/90)/2=80/2=40
b)nu il inteleg\