Find the sum or difference. Write the answer in lowest terms.
- 
A. 3
B. 
C. 
D. 
Answer: D
Mathematics
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Find the exact value of the expression.cos 
cos 
+ sin 
sin 
A. 1
B. 
C. 
D. 
Mathematics
Solve the polynomial inequality and graph the solution set on a number line.2x2 + 3x - 9 ? 0
A. (-?, -3] ? 
B. 
C. [-3, ?)
D. 
Mathematics
Determine whether the equation is true or false. 
= 
A. False B. True
Mathematics
Simplify. Assume that all variables represent positive real numbers.
A. 
B. 
C. 
D. 
Mathematics