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48.
Skew lines; the planes are flying in different
directions and at different altitudes.
49.
C
w
G
w
,
D
w
H
w
,
E
w
I
w
50.
D
w
E
w
,
F
w
G
ww
,
H
w
I
w
,
G
w
H
w
,
B
w
F
w
,
D
w
H
w
,
E
w
I
w
51.
No; plane
ADE
will intersect all the planes if they
are extended.
52.
Sample answers: parallel bars in gymnastics,
parallel port on a computer, parallel events, parallel
voices in a choir, latitude parallels on a map
53.
Infinite number; consider any line through
P
in
any plane that does not contain
,
.
54.
1
55.
Sample answer: Parallel lines and planes are used
in architecture to make structures that will be
stable. Answers should include the following.
•Opposite walls should form parallel planes; the
floor may be parallel to the ceiling.
• The plane that forms a stairway will not be
parallel to some of the walls.
56.
A
57.
The elements of M are 15, 18, 21, 24, 27, and 30.
The elements of P are 16, 20, 24, and 28. The
numbers that are in P but not in M are 16, 20,
and 28. Select any one of these three numbers.
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This note was uploaded on 12/19/2011 for the course MAC 1140 taught by Professor Dr.zhan during the Fall '10 term at UNF.
 Fall '10
 Dr.Zhan
 Calculus, PreCalculus

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