A disc jockey has to choose three songs for the last few minutes of his evening showIf there are nine songs that he feels are appropriate for that time slot, then how many
ways can he choose and arrange to play three of those nine songs?

Which ordered pair is a solution to the system of linear equations? 2x + 3y= 6 –3x + 5y = 10

What statement is true? 2x^2-9x+2=-1

The krasnapolski is a top-of-the-line hotel in amsterdam, the netherlands. among their many services, they rent bicycles to guests. the bicycle checkout is open 24 hours per day 7 days per week and has 50 bicycles on hand. on average, 10 guests request a bicycle each day, arriving completely randomly at all times of the day during the spring and summer seasons. guests keep bicycles for four days on average, with a standard deviation of two days. how long does a guest on average have to wait for a bike? a. approximately 24 hours b. approximately 0.033 hours c. approximately 4 days d. approximately 47 minutes