12) a bag contains 3 red marbles, 4 black
marbles, and 5 yellow marbles. what are the
chances of picking a marble that is not black?

Aswim teacher sells lesson packages. the best deal has the highest ratio of lessons to total cost.swim lesson packagesnumber of lessons total cost$10$4010 1 $8015$80which package is the best deal? l lesson for $105 lessons for $4010 lessons for $8015 lessons for $80mark this and returnsave and exit

In the 30-60-90 triangle below side s has a length of and side r has a length

Acylinder has volume 45π and radius 3. what is it’s height?