Question

ajutatima va rog: Aflati media aritmetica ponderata a numerelor: 5,7 si 9 cu ponderile 6,3 respectiv 3

Answer 1

$M.p.= \frac{5*6+7*3+9*3}{6+3+3} = \frac{30+21+27}{12} = \frac{78}{12} = \frac{13}{2}$