Write the equation of the ellipse that has its center at the origin, focus at 
and vertex at 
. Express the equation in standard form.
What will be an ideal response?
Mathematics
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Write one or more inequalities that describe the set of points.The closed region bounded by the spheres of radius 9 and 10, both centered at the origin, and the planes 
and 
A. 9 ? x2 + y2 + z2 ? 10 and x = 1 and x = 6 B. 81 < x2 + y2 + z2 < 100 and 1 < x < 6 C. 81 ? x2 + y2 + z2 ? 100 and 1 ? x ? 6 D. 9 < x2 + y2 + z2 < 10 and x = 1 and x = 6
Mathematics
Write using exponential notation.6 ? 6
A. 63 B. 26 C. 62 D. 2 ? 6
Mathematics
Rationalize the denominator. Assume that all variables represent nonnegative numbers and that the denominator is not zero.
A. 
B. 
C. 
D. 
Mathematics
Find the common ratio.4, 8, 16, 32, 64, . . .
A. 2
B. -2
C. 8
D. 
Mathematics