Solve the system by graphing.-2x - 2y = -122x + 4y = 22

A. {(1, 5)}
B. ?
C. {(-2, 26)}
D. {(5, 1)}


Answer: A

Mathematics

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Find any excluded values.

A. - 
B. , 1
C.
D.  

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A. {2} B. {-2} C. {2, -2} D. {2, 3}

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At what points is the given function continuous?f(x, y, z) = yz cos 

A. All (x, y, z) such that x ? 0
B. All (x, y, z) such that x ? 
C. All (x, y, z) such that 0 ?  ? 2?
D. All (x, y, z) 

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Find the exact value of the sum.sin  + sin 

A.
B.
C. 1
D. 0

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