Use a graphing calculator to solve the system. Round to the nearest thousandth. 1.2x + 
y = -8-4.5x - 
y = 10
A. {(-0.929, -2.602)}
B. {(4.808, -5.205)}
C. {(0.584, -3.290)}
D. ?
Answer: A
Mathematics
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Solve the problem.Find the centroid of the region cut from the fourth quadrant by the circle x2 + y2 = 16.
A. 
= - 
, 
= 
B. 
= 
, 
= - 
C. 
= 
, 
= - 
D. 
= 
, 
= - 
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Solve the problem.Tom sleeps an average of 8.29 hours a day. In one non-leap year, how many hours does Tom sleep?
A. 431.08 hours B. 2989.35 hours C. 3067.3 hours D. 3025.85 hours
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Use the quadratic formula to solve the equation.2x2 - 16x + 30 = 0
A. 0, 3, 5 B. -3, -5 C. 2, 3, 5 D. 3, 5
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Find the LCD for the list of rational expressions.
, 
A. 9x(x - 3)(x + 3)(x2 + 3) B. 9x2(x - 3) C. 9x2(x - 3)2 D. 9x2(x - 3)(x + 3)
Mathematics