A pouch contains 6 red marbles and 2 blue marbles. A second pouch contains 3 red marbles and 7 blue marbles. A marble will be drawn at random from the first pouch and placed in the second pouch without its color being noted. Then a marble will be drawn from the second pouch. If the second marble is red, what is the probability that the first marble drawn is blue?

Aswimming pool has an input pump for filling the pool and an output pump for emptying the pool. the input pump can fill the pool in 3 hours, and the output pump can drain the pool in 5 hours. as you go to bed, the pool is full, but a neighbor’s kid turns on the output pump. at midnight, you awake to find the pool half empty. immediately, you turn on the input pump, but you are sleepy and forget to turn off the output pump. at what time will the pool become full?

Identify the polynomial. a2b - cd3 a.monomial b.binomial c.trinomial d.four-term polynomial e.five-term polynomial

What is the length and width of a 84.5 square foot rug? will mark