Determine the slope .

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

Find cot x if sin x cot x csc x = √2

At noon a tank contained 10cm water. after several hours it contained 7cm of water. what is the percent decrease of water in the tank?