Add the proper constant to the binomial so that the resulting trinomial is a perfect square trinomial. Then factor the trinomial. x^2+9x+ doing this again no links

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?

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?

Me with geometry ! in this figure, bc is a perpendicular bisects of kj. dm is the angle bisects of bdj. what is the measure of bdm? •60° •90° •30° •45°