There are 15 students on the debate team. The team advisor randomly choose 4 students to debate in the next competition. What is the probability that the team includes Joseph, malena, Carlos, abby?

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

Astuntman jumping off a 20-m-high building is modeled by the equation h=20-5t^2, where t is the same in seconds. a high-speed camera is ready to film him between 15m and 10m above the ground. for which interval of time should the camera film him?

The midpoints of the sides of the large square are joined to form a smaller square. what is the area of the smaller square