Question

Calculati media aritmetica ponderata a numerelor: 2 supra 5 si 3 supra 4 cu ponderile 1 supra 2 si 4.
Va roog!! DAU COROANA!!

Answer 1

$\frac{ \frac{2}{5} * \frac{1}{2}+ \frac{3}{4}*4 }{ \frac{1}{2}+4 } = \frac{ \frac{1}{5} +3}{ \frac{9}{2} } = \frac{16}{5} * \frac{2}{9} = \frac{32}{45}$