Identify the equation as a parabola, circle, ellipse, or hyperbola.9y2 - 9x2 = 81
A. Ellipse
B. Parabola
C. Circle
D. Hyperbola
Answer: D
Mathematics
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Provide an appropriate response.Write a polynomial for the area of the shaded region; then factor completely. 
A. 3(x - 4)(x + 4) B. 4(x - 3)(x + 3) C. 12(x - 3)(x + 3) D. 12(x - 4)(x + 4)
Mathematics
Solve.A jet plane traveling at a constant speed goes 1200 miles with the wind, then turns around and travels for 1000 miles against the wind. If the speed of the wind is 50 mph and the total flight took 4 hours, find the speed of the plane in still air.
A. 550 mph B. 525 mph C. 605 mph D. 435 mph
Mathematics
Identify the inequality as true or false.-8 > -8
A. True B. False
Mathematics
Graph the system of inequalities.y ? 2x - 3y > 
x
A. 
B. 
C. 
D. 
Mathematics