Find the integral.
A. 13 sin x - x cos x + C
B. 13 sin x + 13x cos x + C
C. 13 sin x - 13x cos x + C
D. 13 sin x - 13 cos x + C
Answer: C
Mathematics
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Plot the point.
A. 
B. 
C. 
D. 
Mathematics
A triangular raised bed of annual flowers is to be built next to the door of a new restaurant, as shown. If the angle of the flower bed near the door is 90- and the other angle by the walkway is three times the third angle, what are the measures of the angles of this flower bed?
Mathematics
Simplify.
A. 
B. - 
C. 
D. - 
Mathematics
Multiply.7 ? (-3) ? 7
A. -147 B. 28 C. -28 D. 147
Mathematics