A bag contains 3 red marbles and 4 blue marbles. Two marbles are drawn at random
without replacement.
If the first marble drawn is blue, what is the probability the second marble is also blue?

Ineed to know the answer to this algebra question.

Kelli swam upstream for some distance in a hour.she then swam downstream the same river for the same distance in only 6 minutes.if the river flows at 5km/hr, how fast can kelli swim in still water?

How many and of which kind of roots does the equation f(x)=2x^4−9x^3+17x^2−16x+6 have?