Indicate to which set(s) the number belongs from the following choices: natural numbers, whole numbers, integers, rational numbers, irrational numbers, and real numbers. The numbers may belong to more than one set.97.0
A. natural numbers, whole numbers, integers, rational numbers, real numbers
B. whole numbers, rational numbers, real numbers
C. integers, rational numbers, real numbers
D. real numbers
Answer: A
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Solve the problem.Find the center of mass of a thin infinite region in the first quadrant bounded by the coordinate axes and the curve 
if 
.
A. 
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B. 
= 
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= 
C. 
= 
, 
= 
D. 
= 
, 
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Find the area of the specified region.Inside the six-leaved rose r2 = 8 cos 3?
A. 4
B. 8
C. 16
D. 
Represent the shaded area in the figure group with a mixed number.
A. 12
B. 15
C. 3
D. 3
Find the vertex, focus, and directrix of the parabola. Graph the parabola.(x - 3)2 = -(y + 2)
A. vertex: (3, -2)
focus: (3, -2.25)
directrix: y = -1.75
B. vertex: (-3, 2)
focus: (-3, 1.75)
directrix: y = 2.25
C. vertex: (-3, 2)
focus: (-3.25, 2)
directrix: x = -2.75
D. vertex: (3, -2)
focus: (2.75, -2)
directrix: x = 3.25