Let A = {1, 3, 5, 7}, B = {5, 6, 7, 8}, C = {5, 8}, D = {2, 5, 8}, and U = {1, 2, 3, 4, 5, 6, 7, 8}. Decide if the set relationship is true or false.C ? D

A. True
B. False

Answer: A

Mathematics

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Factor the four-term polynomial by grouping.7x - 63 + xy - 9y

A. (y - 9)(7x + y) B. (x - 9y)(7 + y) C. (x - 9)(7 + y) D. (y - 9)(x + 7)

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Refer to the figure with X the midpoint of side , Y the midpoint of side , XY = 5x- 4, and MO = 8x+16.



Find MO.
(a) 112
(b) 56
(c) 12
(d) 6

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Subtract.8.94

A. 8 B. 6.87 C. 6.97 D. 7.87

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Assume the region is part of a vertical side of a tank with water (? = 62.4   3  3

A. 1684.80 lb B. 1404.00 lb C. 561.60 lb D. 1123.20 lb

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Mathematics