Evaluate the expression.
-1/2
A. 
B. not a real number
C. 
D. 
Answer: D
Mathematics
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Divide.
A. 9x6 + 3x4 + 5x2 B. 9x4 - 3x2 - 5 C. 9x4 + 3x2 + 5 D. 36x4 + 12x2 + 20
Mathematics
Use duality to solve the problem.Minimizew = 4y1 + 2y2subject to:3y1 + y2 ? 22 y1 + 4y2 ? 26 y1 ? 0, y2 ? 0
A. 88 B. 32.7 C. 52 D. 22.5
Mathematics
Translate the sentence into an equation. Use x to represent the unknown number. 10 times a number, increased by 1, is the same as 12 times the number, decreased by 9.
A. 10(x + 1) = 12(x - 9) B. 10x + 9 = 12x - 1 C. 10x + 1 = 12x - 9 D. 10(x - 9) = 12(x + 1)
Mathematics
Find the exact value of the expression. Do not use a calculator.tan 150° cos 210°
A. - 
B. 
C. 
D. 
Mathematics