Find an equation of variation in which y varies inversely as x and the following is true.y = 6, when x = 19
A. y = 114x
B. y = 
C. y = 
D. y = 
Answer: D
Mathematics
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At what points is the given function continuous?f(x, y, z) = yz cos 
A. All (x, y, z)
B. All (x, y, z) such that x ? 0
C. All (x, y, z) such that 0 ? 
? 2?
D. All (x, y, z) such that x ? 
Mathematics
Solve the equation by completing the square.x2 + 3x - 9 = 0
A. {-3 - 3
, -3 + 3
}
B. 
C. 
D. 
Mathematics
Find the slope of the line and sketch its graph.2x + 5y = 19 
A. slope = 
B. slope = - 
C. slope = - 
D. slope = 
Mathematics
Solve.Esther received a paycheck for $1450 which included a bonus of $40. If her hourly pay rate is $16, how many hours did she work?
A. 95.6 hours B. 88.1 hours C. 90.6 hours D. 93.1 hours
Mathematics