Can someone please help me? I need to know 2 angle measures and one line length and I am not sure how to solve it. Im not sure what to do to find the angles.

Evaluate the following expression 1/3^2

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?

Place the following steps in order to complete the square and solve the quadratic equation,