Jenna multiplied four numbers together and then divided by -2. The result was a positive value.

Which of the following statements MUST be true?

None of the factors were negative.
All of the factors were negative.
An odd number of factors were negative.
An even number of factors were negative.

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

Which number completes the inequality? 2/3 < _ < 7/9

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).