Simplify. 
Mathematics
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Determine whether the given expression is a monomial (Yes or No). For those that are monomials, state the coefficient and degree.
A. yes; coefficient 1; degree -5 B. no C. yes; coefficient 5; degree 1 D. yes; coefficient 1; degree 5
Mathematics
Write the fraction in lowest terms.
A. 
B. 
C. 
D. 
Mathematics
Multiply.
A. 
B. 
C. 
D. 
Mathematics
Find the exact value of the trigonometric function.cos 
A. - 
B. - 
C. 
D. 
Mathematics