Use an appropriate identity to find the exact value of the expression.cos (285°)

A.
B.  - 
C.
D.  - 


Answer: C

Mathematics

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Simplify the radical. Assume that all variables represent positive real numbers.

A.
B.
C.  
D.

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A. 1  B. 2  C. 4  D. 20

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Use intercepts and a checkpoint to graph the linear function.2x - 4y = 6

A. , (-3, 0)

B. (0, 3), 

C. , (-3, 0)

D. , (3, 0)

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