Question

If the mean of 6,7,x,8,y,14 is 9 then 2(x+y) is?​

Answer 1

Answer:

42

Step-by-step explanation:

mean=sum of observations ÷no of observations

9=6+7+x+8+y+14÷6. 9=35+x+y÷6. 9×6=35+x+y 54=35+x+y. 54-35=x+y. 21=x+y. NOW AS PER SUM,. 2(x+y )=2(21)=42