Abackyard is 50 feet by 100 feet what's its area

Solve for x, y, and z. show all steps.

Abby is preparing fruit punch for her party. she starts with a bowl filled with liquid that has 1/2 fruit juice and 1/2 sprite, but she decides it's too fruity. so she pours out 1/4 of the liquid, and then fills the bowl up again with sprite. what fraction of the punch is now sprite?

Standard deviation of 19,29,21,22,23