Answer:
a
Step-by-step explanation:
His brothers have 4 games
He had 10 games
So in total there are 14 games
And if there are 2 cases and each one had the same amount, then in each one there would be 14÷2=7
In each case, there are 7 games.
The expression is

and the simplified form is

good luck

where

is the mean. Since


you have variance

and so the standard deiviation is
Answer:
50%
Step-by-step explanation:
you divide 81.90 by 163.80 and get .5 so then you move the decimal over 2 times to get a percent which is 50%