Dan wants to determine the number of liters of a 20% acid cleaning solution that he should combine with an 80% acid cleaning solution to creat 50 liters of a 60% acid cleaning solution. Which equation represents this situation?

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?

Select the number of ways in which a line and a circle can intersect

If sin(x) = 0 and cos(x) = 1, what is tan(x)?