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Media ponderata a numerelor a= 2,7 si b=4,8(6) cu ponderile 4 si 6.



Răspuns :

a=2,7 si b=486-48/90=438/90=146/30=73/15
Mp=(a*4+b*6)/10=(2,7*4+6*73/15)/10=(10,8+146/5)/10=(108/10+292/10)/10=
400/10*1/10=40/10=4