Evaluate (212)3 - (121)3 + (222)3

Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys

Solve the equation by completing the square. x^2+2x=17

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