If r is a positive number and the point (x, y) is in the indicated quadrant, decide whether the given ratio is positive or negative.IV, 
A. Positive
B. Negative
Answer: B
Mathematics
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Rewrite the expression as an equivalent expression that does not contain powers of trigonometric functions greater than 1.5 sin2 x cos2 x
A. 
(1 - cos 2x)
B. 
sin 2x
C. 
(1 - cos 4x)
D. 
(1 - cos 4x)
Mathematics
Solve each system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent.
A. x = -8, y = 3 B. x = -2, y = 3 C. x = -2, y = -2 D. Inconsistent
Mathematics
Write a fraction to represent the shaded portion of the figure.
A. 
B. 
C. 
D. 
Mathematics
Simplify the difference quotient by rationalizing the numerator.
?
?
A. 
B. ?
C. ?
D. ?
E. ?
Mathematics