Determine the period of the following graph.

You and a friend race across a field to a fence and back. your friend has a 50-meter head start. the equations shown represent you and your friend's distances dd (in meters) from the fence tt seconds after the race begins. find the time at which you catch up to your friend. you: d=∣−5t+100∣d=∣−5t+100∣ your friend: d=∣−313t+50∣∣

Which of the following shows the length of the third side, in inches, of the triangle below

Geometry - finding area of regular polygons and sectors (check my math, i can’t find the error)