A student asks 18 friends to participate in a psychology experiment. A Convenience
B) Random
Systematic
D Cluster
E) Stratified

Peter applied to an accounting firm and a consulting firm. he knows that 30% of similarly qualified applicants receive job offers from the accounting firm, while only 20% of similarly qualified applicants receive job offers from the consulting firm. assume that receiving an offer from one firm is independent of receiving an offer from the other. what is the probability that both firms offer peter a job?

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle

This graph shows which inequality? a ≤ –3 a > –3 a ≥ –3 a < –3