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

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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