Find the product. Assume all variables have non-negative values.( + )( - )

A. -4
B. 2 - 2
C. 8
D. 2 - 4


Answer: A

Mathematics

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Solve the problem.For the study described below, identify the population parameter.A researcher is interested in the level of stress among emergency-room nurses in the U.S. 275 emergency-room nurses were interviewed to determine their level of stress. Each nurse was assigned a stress rating based on his or her answers to a number of questions. The average stress rating for the 275 nurses was determined.

A. The average stress rating for all emergency-room nurses in the world B. All emergency-room nurses in the U.S. C. The average stress rating for all emergency-room nurses in the U.S. D. The average stress rating for the 275 emergency-room nurses interviewed

Mathematics

Find decimal notation.

A. 0.916 B. 0.766 C. 0.816 D. 0.836

Mathematics

Write a negation of the statement. Some photographs are not displayed at this exhibition.

A. All photographs are not displayed at this exhibition. B. No photographs are displayed at this exhibition. C. Some photographs are displayed at this exhibition. D. All photographs are displayed at this exhibition.

Mathematics

Solve.x2 + (y + 1)2 = 36 y = x2 + 5

A. (5, 0), (-8, -i), (-8, i)
B. (-, 8), (, 8), (-i, -5), (i, -5)
C. (0, 5), (-i, -8), (i, -8)
D. (-i, -8), (i, -8), (-, 5), (, 5)

Mathematics