Question

determinati numarul x astfel incat media aritmetica a nr : 21; 14,4; 34,6; si x sa fie 29 .

Answer 1

ma=a+b+c.....n/n
21+14+4+34+6+x/6=29⇒
79+x/6=29⇒
(79+x)=6×29⇒
79+x=174⇒x=174-79⇒x=95
sucees