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17.
x
1
7
¬
.
11
x
¬
.
4
7
1
11
¬
.
2
x
18
¬
.
2
x
9
¬
.
x
4
,
x
,
9
18.
In the two triangles, each has a side of measure
12 and the shared side is congruent to itself. The
hypotenuse of the right triangle has a length of
13.86, which is shorter than the third length of
the other triangle, 14. So the SSS Inequality
allows us to conclude that
x
.
90. In any triangle,
an angle has measure less than 180, so we can
write the compound inequality 90
,
x
,
180.
19.
Let
d
be the distance between NewYork and
Atlanta.
554
1
399
¬
.
d
953
¬
.
d
or
d
,
953
399
1
d
¬
.
554
d
¬
.
155
Therefore, 155 mi
,
d
,
953 mi.
20.
A; 3
1
8
5
11, so 3, 8, 11 cannot be the sides of a
triangle.
Chapter 5 Standardized Test Practice
Pages 278–279
1.
D; there are 36 inches in a yard, so there are 36
2
or 1296 square inches in a square yard. So there
are 1296(80) or 103,680 yarn fibers in a square
yard.
2.
B; 6
1
7
1
6
1
4
1
12
1
11
5
46 units
3.
B; the converse is false because if an angle is
acute it can have any measure between 0 and 90.
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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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