Use a calculator fo find the approximate value for the indicated function. Round to four decimal places.cos 2.53
A. -0.5487
B. 0.5487
C. -0.8187
D. 0.8187
Answer: C
Mathematics
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Find the range for the set of data given.
A. 11 B. 36 C. 18 D. 54
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Match the differential equation with the appropriate direction field.y'(x) = 
A. 
B. 
C. 
D. 
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Refer to the weighted voting system 
and the Banzhaf definition of power. (The four players are P1, P2, P3 and P4.)The winning coalitions are
A. all coalitions with three or more players except for {P2, P3, P4}. B. only the grand coalition. C. all coalitions with three or more players. D. all coalitions with two or more players except for {P3, P4}. E. none of these
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Multiply.(4xy2 + xy)2
A. 16x2y4 + 8x2y3 + x2y2 B. 16x2y4 + 16x2y3 + x2y2 C. 8x2y4 + 8x2y3 + x2y2 D. 16x2y4 + x2y2
Mathematics