Simplify.81 ÷ 3 + {7 ? [18 - (7 ? 2)]}
A. 58
B. 45
C. 55
D. 50
Answer: C
Mathematics
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In the given voting system, the weights represent, in order, voters A, B, C, and so on. Determine which voters are critical in the indicated coalition.[12 : 1, 3, 5, 7] ; coalition {B, C, D}
A. Only C and D are critical. B. Only D is critical. C. Only B is critical. D. All are critical.
Mathematics
Provide an appropriate response.What is the phase shift of the function y = 4 cos 
?
A. 180° B. 270° left C. 135° left D. 135° right
Mathematics
Perform the indicated operations and write the answer in the form 
where a and b are real numbers.(9 + 9i)(3 - 4i)
A. 63 - 9i B. -36i2 - 9i + 27 C. -9 + 63i D. 63 + 9i
Mathematics
Solve the equation.log (2 + x) - log (x - 3) = log 2
A. {-8}
B. {8}
C. 
D. ?
Mathematics