Find the value of X in the following figures

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

If p(a) = 0.70 and p(b) = 0.20, then a and b are independent events if

10x − 5y + 14 = 0 whats the answer pls