What is the arc length when θ = 4 pi over 7 and the radius is 5 cm? 20 pi over 7cm 4 pi over 7cm 2 pi over 7cm 24 pi over 7cm

An astronaut drops a rock into a crater on the moon. the distance, d(t), in meters, the rock travels after t seconds can be modeled by the function d(t)0.82. what is the average speed, in meters per second, of the rock between 5 and 10 seconds after it was dropped?

Which equation represents a line that is parallel to the line whose equation is 3x-2y=7( show all work)

Askyscraper is 396 meters tall. at a certain time of day, it casts a shadow that is 332 meters long. at what angle is the sun above the horizon at that time?