Simplify the expression.
A. already in lowest terms
B. -m
C. -1
D. 1
Answer: C
Mathematics
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Evaluate the determinant by inspection.
A. 9 B. -15 C. -21 D. 15
Mathematics
Refer to the following normal curve, with mean ? and standard deviation ?.
A data value of 41 corresponds to a standardized value of
A. -0.5. B. -2. C. -1. D. -1.5. E. none of these
Mathematics
Multiply.(2x - 12)(2x + 12)
A. 2x2 + 48x - 144 B. 4x2 - 144 C. 4x2 - 48x - 144 D. 4x2 + 48x - 144
Mathematics
Add and simplify. 
+ 
A. 
B. 
C. 
D. 
Mathematics