Chapter 2
Standardized Test Practice
Pages 122–123
1.
D;
49
0.143
2.646
49
2.
C; 2(7)
3
11, so (7, 11) is on the line.
2(4)
3
5, so (4, 5) is on the line.
2(
2)
3
7, so (
2,
10) is not on the line.
2(
5)
3
13, so (
5,
13) is on the line.
3.
A; a protractor is used to measure angles, not
lengths. A calculator is not a measuring tool. A
centimeter ruler is more accurate than a
yardstick because its unit of measurement
(centimeters) is smaller.
4.
B;
DE
EF
so
DE
EF
.
8
x
3
¬
3
x
7
8
x
¬
3
x
10
5
x
¬
10
x
¬
2
5.
A;
ACF
DCF
ACD
by the Angle Addition
Postulate. So
m
ACF
m
DCF
90 since
ACD
is a right angle. Then
ACF
and
DCF
are complementary angles.
6.
C; inductive reasoning uses specific examples to
make a conjecture.
7.
A
8.
A; divide both sides by 3.
9.
The shortest distance is the length of the
hypotenuse of the right triangle whose legs have
lengths 120 yd and 53
1
3
yd. Use the Pythagorean
Theorem to find the length of the hypotenuse.
Call this length
d
.
d
2
(120)
2
53
1
3
2
d
2
14,400
25,
9
600
d
¬
17,244.4
d
¬
131 yd
10.
inverse
11.
(
p
→
q
)
(
q
→
r
)
→
(
p
→
r
)
Martina drank 300 mg of calcium.
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 Fall '10
 Dr.Zhan
 Calculus, PreCalculus, Height, Angle Addition

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