Solve the problem.A comet has an orbit that is in the shape of an ellipse with the Sun at one of the foci. The equation is approximately 
where x and y are in astronomical units (an astronomical unit is 93,000,000 miles). Sketch the graph of the comet.
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Find the flux of the vector field F across the surface S in the indicated direction.F = 3x2j - z4k; S is the portion of the parabolic cylinder y = 10x2 for which 0 ? z ? 1 and -1 ? x ? 1; direction is outward (away from the y-z plane)
A. - 2 B. 2 C. 6 D. -6
Mathematics
Calculate 
.v = 4i
A. -4 B. 4 C. 16 D. 0
Mathematics
Solve.BT&T charges $0.37 for the first minute and $0.28 for each additional minute for a long-distance call. How much will a 5 minute long-distance call cost?
A. $1.40 B. $1.77 C. $1.85 D. $1.49
Mathematics
Answer the question.The points (-3, 3), (0, 6), ( 2, -2), and ( 5, 1) are the vertices of a quadrilateral. Is the quadrilateral a rectangle?
A. Yes B. No
Mathematics