The length of a rectangle is 5 cm more than its width and the area is 50 cm squared. find the length, width and the perimeter

There were 816 people at a concert when a band started to play. after each song, only half the people stayed to hear the next song. how many people were left at the concert after x songs? write a function to represent this scenario.

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

Corresponding angles are a. always b. sometimes c. never congruent