When possible, apply the distributive law and combine like terms.11x - x - 2x + x
A. 11x
B. x2 + 9x
C. 9x
D. -x2 + 9x
Answer: C
Mathematics
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Because of the forces caused by its rotation, a planet is actually an oblate ellipsoid rather than a sphere. The equatorial radius is 3967 miles and the polar radius is 3951 miles. Find an equation of the ellipsoid. Assume that the center of a planet is at the origin and the xy- trace 
corresponds to the equator.
?
A. 
B. 
C. 
D. 
E. 
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