以一个 S3 -21 -- 4x squared + 33x - 21 equals 0 solve the quadratic equation ​

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

What fraction is equivalent to 0.46464646··· a. 46⁄999 b. 46⁄100 c. 46⁄99 d. 23⁄50

What is the slope of the line that passes through the points (–9, 2) and (0, 4)? the slope of the line is