Find the domain of the function of two variables.f(x, y) = 
A. {(x, y)| y ? -2x}
B. {(x, y)| y ? 2x}
C. {(x, y)| y ? 2x}
D. {(x, y)| y ? -2x }
Answer: D
Mathematics
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A. y = 2x3 + 3x-3 - 5 B. y = 2x3 + 3x-3 + 5 C. y = 2x3 - 3x-3 + 5 D. y = 2x3 + 3x-3
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Solve the problem.Find the area of the sector having radius 13.5 meters and a central angle 
. Round to one decimal place.
A. 4.5 m2 B. 1.5 m2 C. 61.3 m2 D. 122.7 m2
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Perform the indicated operation and write the answer in simplest form.- 
? - 
A. 
B. - 
C. - 
D. 
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Solve. Write the fraction in simplest form.There are 14,400 runners at a marathon. If 12,000 are male, what fraction of the runners are female?
A. 
B. 
C. 
D. 
Mathematics