Rewrite sec 72 in terms of its cofunction.

Which statement justifies why angle ebc measures 90?

Solve each quadratic equation by factoring and using the zero product property. [tex]x^2+6x+8=0[/tex]

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