Question

Calculati media ponderata a numerelor : 
 a 2 si 3 cu ponderile si 3 si 8 ???

Answer 1

mp=(2*3+3*8)/3+8=(6+24)/11=30/11=2,(72)

Answer 2

$\frac{2*3 + 3*8}{3+8} = \frac{6+24}{11} = \frac{30}{11}$