Simplify the expression.
?
?
A. ?
?
B. ?
C. ?
D. ?
E. ?
Answer: E
Mathematics
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Replace the polar equation with an equivalent Cartesian equation.r2 = 40r cos ? - 6r sin ? - 9
A. (x - 20)2 + (y + 3)2 = 400 B. (x + 40)2 + (y - 6)2 = 9 C. 40x - 6y = 9 D. (x - 20)2 + (y + 3)2 = 9
Mathematics
Determine whether the graph represents a function.
A. Not a function B. A function
Mathematics
Solve the triangle. 
A. A = 34.8°, B = 86.4°, C = 58.8° B. A = 34.8°, B = 58.8°, C = 86.4° C. A = 58.8°, B = 34.8°, C = 86.4° D. A = 58.8°, B = 86.4°, C = 34.8°
Mathematics
Solve the problem.The three points (x1, y1), (x2, y2), and (x3, y3) are collinear if 
= 0. Are the points 
, 
, and
collinear?
A. No B. Yes
Mathematics