Solve the problem.If cos ? = - , and ? terminates in quadrant II, then find cos 2?.

A.
B.
C. - 
D. - 


Answer: C

Mathematics

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Answer the following statement true (T) or false (F)

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Use the distributive property to rewrite the expression.9(8r + 3 + 4s)

A. 72r + 3 + 36s B. 72r + 3 + 4s C. 72r + 27 + 36s D. 72r + 27 + 4s

Mathematics

Shade exactly ten squares so that no three consecutive shaded squares line up vertically, horizontally or diagonally.

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Consider only the discriminant, b2 - 4ac, to determine whether one real-number solution, two different real-number solutions, or two different imaginary-number solutions exist.x2 + 8x + 5 = 0

A. Two different imaginary-number solutions B. Two different real-number solutions C. One real solution

Mathematics