1. A bag contains 3 red marbles and 4 blue marbles. Two marbles are drawn at random without replacement.
2 answers:
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Given the points A and B
The coordinates of point A = ( 3 , 1 )
The coordinates of point B = (-1 , -1)
The midpoint of AB, is the point C
C will be calculated as following :
so, the midpoint of AB = (1 , 0 )