Abox contains 9 plain pencils and pen. a second box contains 5 color pencils and 5 crayons. one item from each box is chosen at random. what is the probability that a pen from the first box and a crayon from the second box are selected?

10 ! a train starts from grand city and travels toward belleville 388 miles away. at the same time, a train starts from belleville and runs at the rate of 47 miles per hour toward grand city. they pass each other 4 hours later. find the rate of the train from grand city.

Which value of m will create a system of parallel lines with no solution? y = mx - 6 8x - 4y = 12

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.