Question

a) calculati media aritmetica ponderala a numerelor 5 si 1/5 cu ponderile 4si 5 . B) calculati media aritmetica a numerelor 1/2; 5/4;3/5 si 1/6 cu ponderile 2:4: 5 si 6

Answer 1

(5*4+1/5*5)/(4+5)=
=(20+1)/9=
=21/9=
=7/3=
=2,(3)


(1/2*2+5/4*4+3/5*5+1/6*6)/(2+4+5+6)=
=(1+5+3+1)/17=
=10/17