There were 480 students who entered as the Class of 2009. Of these, 430 submitted SAT scores by the time they enrolled. If you select a name at random from this class, what is the probability that the student did not submit an SAT score

Combined megan and kelly worked 60 hours.kelly worked twice as many hours as megan.how many hours did they each worked?

The salesperson earns a 5% commission on the first $5,000 she has in sales. the salesperson earns a 7.5% commission on the amount of her sales that are greater than $5,000. this month the sales person had $8,000 in sales. what amount of commission, in dollars, did she earn?

Situation: . find the substance's half-life, in days. round your answer to the nearest tenth. a 11 gram sample of a substance that's used to treat thyroid disorders has a k. value of 0.1247. enter the correct answer n - noekt done no - initial mass (at time t = 0) n - mass at timet k a positive constant that depends on the substance itself and on the units used to measure time t= time, in days