Solve.The time in hours it takes a satellite to complete an orbit around the earth varies directly as the radius of the orbit (from the center of the earth) and inversely as the orbital velocity. If a satellite completes an orbit 
above the earth in 
at a velocity of 
how long would it take a satellite to complete an orbit if it is at 
/> above the earth at a velocity of 
(Use 
as the radius of the earth.)
A. 25.11 hours
B. 143.57 hours
C. 4.13 hours
D. 14.36 hours
Answer: D
Mathematics
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Solve the equation. Use the multiplication axiom.
a = 0
A. {1} B. {-19} C. {19} D. {0}
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Write the standard form for a hyperbola centered at (h, k). Identify the center and the vertices.9x2 - 4y2 - 54x + 32y - 19 = 0
A. C(3, 4); V(3, 4 ± 2); 
- 
= 1
B. C(3, 4); Vertices: V1(2, 3 ± 3); 
- 
= 1
C. C(- 3, - 4); Vertices: V1(- 3 ± 3, - 4); 
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= 1
D. C(3, 4); V(3 ± 2, 4); 
- 
= 1
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Use the imaginary unit to write the expression.
A. 2i
B. -i
C. ±2
D. -2i
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