Verify that 1 + cos 2 theta / 2 cos theta = cos theta is an identity

Maria, Daniel, Stephanie, Michael, Elena, Tyler, Sue, and Dimitri have reserved eight seats in a row at the theater, starting at an aisle seat. In how many ways can they arrange themselves if Maria and Daniel are to sit next to each other?

The probability of getting a heads and an even number if you fill a die and flip a coin at the same time.

What is the answer to this problem? What equation represents data in this table? X|1|2|3|4|5|X| Y|-3|-2|-1|0|1|?| Remember to include y = in your answer

An airplane on autopilot took 5 hours to travel 3,475

Michelle is three times as old as Fiona. Fiona is twice as old as Madeline. Madeline is seven years old. How old is Michelle?

An American motor company is releasing a new car model. There will be 2 body styles (2 or 4 door) from which to choose.

Tell whether (1,10) is a solution of y>5+6x

The circumference of a circle is 28 pi meters. What is its area in terms of pi?

Which of the following expressions represents a function? x = 1 { (3, 2), (3, - 2), (4, 5), (4, - 5) } y = 4x - 1 4x2 + y2 = 16

On Monday, students at a summer camp spent 4 hours and 25 minutes learning how to swim. In the morning they spent 2 hours and 48 minutes at the pool. How long did the students spend at the pool in the afternoon?