Let an integer be chosen at random from the integers 1 to 30 inclusive. find the probability that the integer chosen is divisible by 4 or is greater than 25 and less than 30. a. 1/3 b. 11/30 c. 2/5

c

The answer would be A because P= (7+4-1)   10      1
                                                                 ==
                                                                    30         30     30

Best answer that i found on yahoo ok   set :   x= length of 2nd piece in cm  x- 3= length of 1st piece in cm  x-4= length of 3rd piece in cm  then since you know they all came from the 20 cm ribbon you add them together and set them equal to 20x+ x-3 +x-4 = 20  3x - 7= 20  3x= 27  x= 9  the shortest piece is the third piece which is x- 4  x-4  9-4 = 5  the length of the smallest piece is 5 cm.  the other lengths are  9 cm  6 cm