Suppose you have the following project digraph. (The numbers in parentheses represent hours.)
Using the decreasing-time algorithm to schedule this project with two processors, the project finishing time is
A. 18 hours.
B. 17 hours.
C. 20 hours.
D. 19 hours.
E. none of these
Answer: C
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Two ships leave port at the same time. Ship A sails north at a speed of 24 mph while ship B sails east at a speed of 36 mph. ? a. Find an expression in terms of the time t (in hours) giving the distance between the two ships. b. Using the expression obtained in part (a), find the distance between the two ships 1 hr after leaving port. Round the answer to the nearest tenth. ?
A. 
and 43.3
B. 
and 47.3
C. 
and 43.3
D. 
and 39.3
E. 
and 39.3
Two marbles are drawn without replacement from a box with 3 white, 2 green, 2 red, and 1 blue marble. Find the probability.One marble is green and one marble is red.
A. 
B. 
C. 
D. 
Find the zero of the linear function.g(x) = -x + 5
A. -5 B. 5 C. 0 D. -10
Solve. Try factoring first. If factoring is not possible or is difficult, use the quadratic formula.6n2 = -10n - 3
A. 
B. 
C. 
D. 