Question

x si y sint direct proportionale cu 6 si 15 stiind ca x+y=42 sa se afle media geonetrica a nr

Answer 1

x+y =42
x/6 =y/15
x/6+y/15 =x+y/6+15 =42/21 =2
x/6=2  ;  x=6*2 =12
y/15 =2   ;  y=15*2 =30
verif  ;   12+30 =42