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Amoremio821
a fost răspuns

calculati media aritmetică a nr.a)+5;7;+14.b)+1/2;4/5;+5/6;1/4.

Răspuns :

Renatemambouko
a)(+5+7+14)/3=26/3=8,(6)

b)(1/2+4/5+5/6+1/4)/4=
=[(1*30+4*12+5*10+1*15)/60]/4=
=(30+48+50+15)/240=
=143/240=0,595/(3)

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