Find the values of the variables for which the statement is true, if possible. = 

A. x = 9; y = 6; z = 7
B. x = 6; y = 7; z = 9
C. x = -9; y = -6; z = -7
D. x = -9; y = 7; z = 6


Answer: A

Mathematics

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Find the distance between the pair of points. Give an exact answer, and where appropriate, an approximation to three decimal places.(-3.4, 2.7) and (3.1, -12.9)

A. , 14.181
B. 16.9
C. 33.8
D. , 22.999

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Use the Half-angle Formulas to find the exact value of the trigonometric function. cos

A.  
B.  
C.  
D.  

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