Solve x to the 3rd = 125 over 127

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

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.

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