There are 20 people competing in a contest, first place earns $100, second place earns $50 and third place earns $25. how many ways can the three winners be selected?

The composite figure is made up of a parallelogram and a rectangle. find the area. a. 76 sq. units b. 48 sq. units c. 124 sq. units d. 28 sq. units

Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?

While scuba diving, rajeev dove to a depth of 12.6 feet below the surface of the water and then descended another 8.7 feet. what expression can be used to find rajeev's new position? 12.6 – 8.7 –12.6 – 8.7 –12.6 – (–8.7) 12.6 – (–8.7)