Perform the indicated operation and reduce the answer to lowest terms.
- 
+ 
A. - 
B. 
C. 
D. - 
Answer: B
Mathematics
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Find the mode(s) for the given sample data. The blood types for 30 people who agreed to participate in a medical study were as follows.
?Find the mode of the blood types.
A. O B. 13 C. O, A D. A
Mathematics
Solve the problem.Suppose that f is continuous and that 
and 
Find 
A. -7 B. -21 C. 21 D. -3
Mathematics
Find all solutions of the equation in the interval [0, 2?).cos2 ? + 2 cos ? + 1 = 0
A. 
B. {?}
C. 
D. {2?}
Mathematics
Perform the indicated operations and simplify.
?
?
A. 
B. 
C. 
D. 
E. 
Mathematics