Angel and Jayden were at track practice.
The track is 2/5
kilometers around.
 Angel ran 1 lap in 2 minutes.
 Jayden ran 3 laps in 5 minutes.
Who is running faster?

After t seconds, a ball tossed in the air from the ground level reaches a height of h feet given by the equation h = 144t-16t^2. after how many seconds will the ball hit the ground before rebounding?

The perimeter of a quarter circle is 14.28 miles. what is the quarter circle's radius?

Anew obstacle course is home to several new types of challenging obstacles. one such obstacle is traversing a 15-stair staircase. to make it more challenging, the stairs are not uniformly spaced. rather, the vertical space between consecutive stairs for the first 10 stairs is 113 feet and the vertical space for the last 5 stairs is 134 feet. what is the total vertical distance traveled ascending and descending the entire 15-stair staircase?