Solve the problem.A grain dealer sold to one customer 9 bushels of wheat, 3 of corn, and 5 of rye for $40.90; to another, 3 of wheat, 5 of corn, and 9 of rye for $47.30; and to a third, 5 of wheat, 9 of corn, and 3 of rye for $46.10. What was the price per bushel for corn?
A. $1.90
B. $2.40
C. $2.90
D. $3.10
Answer: D
Mathematics
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Suppose you have the following project digraph. (The numbers in parentheses represent hours.)
Using critical-path algorithm to schedule this project with two processors results in a finishing time of
A. 22 hours. B. 19 hours. C. 18 hours. D. 23 hours. E. none of these
Mathematics
Find of the functions.
?,
?
A.
B.
C.
D.
E.
Mathematics
Factor the GCF from the polynomial.7x6 - 28x4
A. 7(x6 - 4x4) B. x6(7x2 - 28) C. 7x4(x2 - 4) D. 7x5(x - 4x)
Mathematics
Perform the indicated operation.18 - (18 - 22) + (-21)
A. 79 B. -43 C. 1 D. -1
Mathematics