Perform the indicated operations.
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Solve for the angle ?, where 0 ? ? ? 2?sin 2? + cos ? = 0
A. ? = 
, 
, 
, 
B. ? = 
, 
, 
, 
C. 
, 
, 
, 
D. ? = 
, 
, 
, 
Mathematics
Solve by the elimination method:
10x + 39y = 16
15x + 39y = 18
Mathematics
Plot and interpret the appropriate scatter diagram.The table gives the times spent watching TV and the grades of several students. 
Which scatter diagram describes the data and the relationship, if any?
A. 
More hours spent watching TV may reduce grades.
B. 
More hours spent watching TV may reduce grades.
C. 
More hours spent watching TV may increase grades.
D. none of these
Mathematics
Perform the indicated operations.|-15 + 13| - 9 + 2
A. -5 B. 21 C. -9 D. 9
Mathematics