Alex wants to select two different numbers from the set {1, 2, 3, 4, 5}. In how many ways can he do this so that the two numbers are not consecutive?

two different numbers from the set {1, 2, 3, ..., n}. In how many ways can he do this so that the two numbers are not consecutive?

three different numbers from the set {1, 2, 3, 4, 5, 6}. In how many ways can he do this so that there are no pairs of consecutive numbers among the three?

How many triangles can be drawn with side lengths 4 centimeters, 4.5 centimeters, and 9 centimeters? explain

The base of a triangle is 8 1 3 meters and the height of the triangle is the fourth root of 16 meters meters. what is the area of the triangle?

In new york city at the spring equinox there are 12 hours 8 minutes of daylight. the longest and shortest days of the year very by two hours and 53 minutes from the equinox in this year the equinox falls on march 21 in this task you use trigonometric function to model the hours of daylight hours on certain days of the year in new york city a.what is the independent and dependent variables? b.find the amplitude and the period of the function. c.create a trigonometric function that describes the hours of sunlight for each day of the year. d. graph the function you build in part c. e. use the function you build in part c to find out how many fewer daylight hours february 10 will have than march 21. you may look at the calendar.