4. A bmx rider wants to jump a set of stairs that are 14 meters long and 8.3 meters high. If the rider reaches a velocity of 9m/s, how much higher should he jump off
the top landing of the stairs to clear all of the stairs below?
If the rider cannot jump the additional height that is needed to clear the stairs, how
fast must he travel to clear the stairs without jumping at all?

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

The actual length of side y is 22 cm. use the scale drawing to find the actual length of side x. a) 15.2 cm b) 17.1 cm c) 18.0 cm d) 28.3 cm

Pleasseee important quick note: enter your answer and show all the steps that you use to solve this problem in the space provided. use the circle graph shown below to answer the question. a pie chart labeled favorite sports to watch is divided into three portions. football represents 42 percent, baseball represents 33 percent, and soccer represents 25 percent. if 210 people said football was their favorite sport to watch, how many people were surveyed?