Simplify the expression. Assume that all variables represent nonnegative real numbers.4
+ 4
A. 9
B. 36x
C. 4
D. 36
Answer: D
Mathematics
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Write the solution set in interval notation.{x|x ? -5}
A. (-?, -5) B. (-5, ?) C. [-5, ?) D. (-?, -5]
Mathematics
Solve the equation for complex solutions.x2 + x + 4 = 0
A. - 
± 
B. - 
± 
i
C. 
± 
i
D. 
± 
Mathematics
Find the volume of the shaded solid. Round your answer to 2 decimal places if necessary. Use ? = 3.14 when necessary.
A. 1604.88 ft3 B. 1859.22 ft3 C. 1830.96 ft3 D. 587.52 ft3
Mathematics
Refer to the weighted voting system 
and the Banzhaf definition of power. (The four players are P1, P2, P3, and P4.)The weight of the coalition {P2, P3, P4} is
A. 57. B. 60. C. 28. D. 25. E. none of these
Mathematics