Add and simplify. Write the answer as an improper fraction as needed.
+ 
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Determine the quadrant containing the terminal side of ? under the given conditions.sec ? < 0 and tan ? < 0
A. Quadrant I B. Quadrant III C. Quadrant IV D. Quadrant II
Mathematics
Solve the problem.At what points on the graph of f(x) = 2x3 - 6x2 - 19x is the slope of the tangent line -1?
A. (3, -57), (1, -23) B. (3, -57), (-1, 11) C. (0, 0), (-1, 11) D. (-3, -51), (-57, -23)
Mathematics
Find the exact value of the expression.cos 40° cos 20° - sin 40° sin 20°
A. 
B. 
C. 
D. 
Mathematics
Solve the system of equations using Cramer's Rule, if applicable.
A. ?
B. (4, -3)
C. {(x,y) 
D. (-3, 4)
Mathematics