Find the center of mass of the lamina that occupies the region D and has the given density function, if D is bounded by the parabola y = 1 - x² and the x-axis.
p(x, y) = 6y
(0, 0.57)
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Suppose you have the following project digraph. (The numbers in parentheses represent hours.)
Using the priority list, C, F, E, B, A, D and the priority-list model to schedule this project with two processors results in a finishing time of
A. 19 hours. B. 22 hours. C. 18 hours. D. 23 hours. E. none of these
Use a graphing calculator to solve the system of equations. Round your solutions to one decimal place.2.8x + 1.3y - 4.1z = 2.54.1x - 6.7y + 1.9z = -4.74.6x + 4.8y + 5.6z = 8.1
A. (0.3, 0.5, 0.0) B. (2.2, 4.2, 0.4) C. (1.1, 2.1, 0.2) D. (0.5, 1.1, 0.1)
Add.787 + 451
A. 1538 B. 1522 C. 1422 D. 1238
Solve the problem.Suppose, for a certain drug, the following results were obtained: Immediately after the drug was administered, the concentration was 7 milligrams per milliliter. Eleven hours later, the concentration had dropped to 2.8 milligrams per milliliter. The concentration decays exponentially according to the law 
Determine the value of k for this drug.
A. k = -0.0134 B. k = 0.0833 C. k = -1.6180 D. k = -0.0833