Sketch the graph of the given equation over the interval [-2?, 2?].y = cos  

A.

B.

C.

D.

Answer: D

Mathematics

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For the given rectangular equation, write an equivalent polar equation.xy = 4

A. r = 4 sin ? cos ?
B. r = 
C. r2 = 
D. r2 = 4 sin ? cos ?

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Find the perimeter of the specified triangle. Assume the triangles are similar.Find the perimeter of the triangle on the right.

A. 125 ft B. 153 ft C. 136.2 ft D. 195 ft

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Use the indicated property to provide a new expression equal to the given expression. Simplify, if possible.10 + (-10); inverse

A. 100 B. -20 C. 0 D. 20

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Insert < or > to form a true sentence.-   - 

A. > B. <

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