Homework Answers
solution:
given
8 red balls,5 white balls and 7 blue balls
total balls=20
select 3 balls is 20C3
a)
P(All red marbles) = 8C3/20C3
=8*7*6/3*2*1/20*19*18/3*2*1
=14/5*19*3
=14/285
b)P(None red marble)=12C3/20C3=12*11*10/20*19*18
=11/57
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Score on last attempt: out of 3 Score in gradebook:1 out of 3 A box is formed by cutting squares from the four corners of a 11"-wide by 13"-long sheet of paper and folding up the sides. Let a represent the length of the side of the square cutout (in inches), and let V represent the volume of the box (in cubic inches). a. Write a formula that expresses V in terms of z. b. If the cutout length increases...
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