Perform the indicated operation and, if possible, simplify.
+ 
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Provide an appropriate response.Prove that 
cos t = cos c for c ? 0. You may assume that 
sin t = 0 and 
cos t = 1.[Hint: let h = t - c and find 
cos(c + h) ]
What will be an ideal response?
Mathematics
Evaluate the expression using the given values.
x = 4, y = 9
A. 87 B. -39 C. -87 D. 39
Mathematics
Solve the polynomial inequality.2x3 + 7x2 - 24x - 45 > 0
A. 
? 
B. 
? 
C. 
? 
D. 
? 
Mathematics
Perform the indicated operation.
A. -14 B. -7 C. 7 D. 14
Mathematics