Solve the problem.The orbit of a planet around a sun is an ellipse with the sun at one focus. The aphelion of a planet is its greatest distance from the sun, its perihelion is its shortest distance, and its mean distance is the length of the semimajor axis of the elliptical orbit. If a planet has a perihelion of 397.4 million miles and a mean distance of 399 million miles, write an equation for the orbit of the planet around the sun.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: C
Mathematics
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Find the volume of the solid generated by revolving the region bounded by the given lines and curves about the x-axis. Use the method of disks.y = x2, y = 0, x = 0, x = 3
A. 
?
B. 
?
C. 
?
D. 9?
Mathematics
Find the perimeter or circumference.
A. 20 cm B. 10 cm C. 16 cm D. 4 cm
Mathematics
The line graph shows the recorded hourly temperatures in degrees Fahrenheit at an airport. Use the graph to answer the question.
What temperature was recorded at 11 a.m.?
A. 79 ° F B. 75 ° F C. 77 ° F D. 78 ° F
Mathematics
Find an equation for the line, in the indicated form, with the given properties. Containing the points (3, 0) and (0, -10); general form
A. 10x - 3y = 30
B. y = - 
x - 10
C. y = - 
x + 3
D. 10x + 3y = 30
Mathematics