Add or subtract, if possible. Assume that all variables represent non-negative values. Simplify your answer. 
+ 
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Provide an appropriate response.How many dimensions does a plane have?
A. 3 B. 0 C. 1 D. 2
Mathematics
Find the expected value.Bob and Fred play the following game. Bob rolls a single die. If an even number results, Bob must pay Fred the number of dollars indicated by the number rolled. On the other hand, if an odd number is rolled, Fred must pay Bob the number of dollars indicated by the number rolled. Find Bob's expected winnings.
A. -$0.25 B. $0 C. -$0.50 D. -$0.40
Mathematics
Evaluate.-
+ 
+ (5 + 
)
A. -19 B. -5 C. 7 D. 5
Mathematics
Graph the function.y = cot (?x)
A. 
B. 
C. 
D. 
Mathematics