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
Answer: C
Mathematics
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Answer the question.Consider the numbers 0.179173...., 
, -6, 0, 
, 
, 0.
, 0.38, 
. Which are irrational numbers?
A. 0.179173....,
, 0.
, 
B. 
, 
C. 0.179173....,
, 
D. 0.179173....,
, 0.
Mathematics
Perform the indicated operation.15.875 - 8.719
A. 7.256 B. 7.156 C. 7.356 D. 24.594
Mathematics
Simplify.81 ? 43
A. 512 B. 32,768 C. 72 D. 96
Mathematics
Graph the system of inequalities. Shade the region that represents the points of intersection.
A. 
B. 
C. 
D. 
Mathematics