Carly has some red marbles but then found 10 blue marbles. Carly is putting her marbles into 3 different jars. If each jar has 12 marbles, how many red marbles does she have?

The mean finish time was 185.52 with a standard deviation of 0.327 minute. the winning car driven by chris finished in 185.13. the previous year race had a mean finish time of 110.3 with a standard deviation of 0.106. the winning car that year driven by karen finished in 110.13 minutes. find their respective z-scores. chris - z-score karen “- z-score