Evaluate the expression for x = -2, y = 3, and a = -4.
A. 
B. 
C. 0
D. 2
Answer: D
Mathematics
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Find Dxy.y = -coth-1 
A. 
B. 
C. 
D. 
Mathematics
Determine if the argument is valid or invalid. Give a reason to justify answer.If you eat well, you will be well.If you are well, you will be happy.? If you eat well, you will be happy.
A. Valid by the law of contraposition B. Invalid by fallacy of the converse C. Valid by the law of syllogism D. Invalid by fallacy of the inverse
Mathematics
Rationalize the denominator and simplify. Assume that all variables represent positive real numbers.
A. 
B. 
C. 
D. 
Mathematics
Add or subtract as indicated. Simplify if necessary.
+ 
+ 
A. 
B. 
C. 
D. 
Mathematics