Pre-Algebra Chapter 9

Standardized
Test Practice
33. What are the coordinates of the midpoint of the line segment with
endpoints H(–2, 0) and G(8, 6)?
A (1, 7) B (5, 3) C (3, 3) D (2, 2)
34. Which expression shows how to
find the distance between points
M(–5, –3) and N(2, 3)?
A
B
C
D
(2 ) 5 2 (3 3) 2
[2 5)] ( 2 3)] [3 (
2
[2 5)] ( 2 ) (3 3
2
(3 ) 23 2 [5)] (
2
M(5, 3)
O
y
N(2, 3)
x
Maintain Your Skills
Mixed Review
Find the length of the hypotenuse in each right triangle. Round to the
nearest tenth, if necessary. (Lesson 9-5)
35. 36. 24 yd
37. 12 km
6 ft
7 ft
c ft
c yd
33 km c km
38. The measures of the angles of a triangle are in the ratio 1:4:5. Find the
measure of each angle. (Lesson 9-4)
ALGEBRA State the slope and the y-intercept for the graph of each
equation. (Lesson 8-6)
39. y 2x 1 40. x y 4 41. 4x y 6
9 yd
Getting Ready for
the Next Lesson
42. What number is 56% of 85? (Lesson 6-7)
PREREQUISITE SKILL Solve each proportion.
(To review proportions, see Lesson 6-2.)
4
43. 7 1 6 x 44. a
1 2
15
60
46. 2 .8 4.
2 47. 3 . 4
2ṅ 36
h 12
85
45. 8 4
5 2
m 13
k 48. 5
.5 1 11
15
P ractice Quiz 2
Classify each triangle by its angles and by its sides. (Lesson 9-4)
1. 2.
96˚
42˚ 42˚
53˚
37˚
Lessons 9-4 through 9-6
3. The lengths of three sides of a triangle are 34 meters, 30 meters, and
16 meters. Is the triangle a right triangle? Explain. (Lesson 9-5)
4. Find the distance between A(4, 1) and B(7, 9) to the nearest tenth.
(Lesson 9-6)
5. The coordinates of the endpoints of MN are M(2, 3) and N(0, 7). What are
the coordinates of the midpoint of MN? (Lesson 9-6)
470 Chapter 9 Real Numbers and Right Triangles