Mathematics, 01.03.2021 21:30 cecem58
A box contains 20 screws which are identical in size, but 12 of which are zinccoated and 8 of which are not. Two screws are selected at random, withoutreplacement. a. Find the probability that both are zinc coated. b. Find the probability that at least one is zinc coated.
Answers: 2
Mathematics, 21.06.2019 21:50, elsauceomotho
Which value of y will make the inequality y< -1 false?
Answers: 2
Mathematics, 21.06.2019 22:00, Jasten
Set $r$ is a set of rectangles such that (1) only the grid points shown here are used as vertices, (2) all sides are vertical or horizontal and (3) no two rectangles in the set are congruent. if $r$ contains the maximum possible number of rectangles given these conditions, what fraction of the rectangles in set $r$ are squares? express your answer as a common fraction.
Answers: 1
A box contains 20 screws which are identical in size, but 12 of which are zinccoated and 8 of which...
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