Răspunsuri

2014-04-04T18:59:16+03:00
Media aritmetica ponderata=4*2+5*3+6*4+7*5+8*7+9*6+10*3 totul supra 4+5+6+7+8+9+10    si ne da 8+15+24+35+56+54+30 supra 49
m ap=222/49=4,53