Pre-Algebra Chapter 6 - Ramsey School District

Practice and Apply
Homework Help
For
Exercises
See
Examples
9–14 1
15–31 2
32–35, 3, 4
36–42
Extra Practice
See page 737.
Determine whether each pair of ratios forms a proportion.
9. 2 3 , 8
12 10. 4 2 , 1 6
11. 1 . 5
, 3 5
5.
0 9
18
12. , 1 5 3.
4
13. , 5 . 1
5.3
14. , 2 .
7
2 . 4 2
1.
6 2.
4
1 5.9
8.
1
ALGEBRA Solve each proportion.
15. p 6 2 4
w
16. 1 4
4
17. 8 36
1 1 22
1 0 a
18. 1 8
2 4
19. 5 12
q
h 1 0
20. 5 1
1 7
30
z 7
7
21. 4 5 x 9 22. 2 c
23. 7 15
7 2
5 10 .5
b
24. 1 6 4.8 2
25. 9
7 h
.4 0 .2 9
26. 7
v
.2 3 .5
k
a
27. 0. 28 4
1.4 28. 3 15
16
29. 4 14
m 3
x 5 5
30. Find the value of d that makes 5 . 1
7 .5 a proportion.
1.
7 d
31. What value of m makes 6 . 5 m
1.
3 5 .2 a proportion?
Write a proportion that could be used to solve for each variable. Then solve.
32. 8 pencils in 2 boxes 33. 12 glasses in 3 crates
20 pencils in x boxes 72 glasses in m crates
34. y dollars for 5.4 gallons 35. 5 quarts for $6.25
14 dollars for 3 gallons d quarts for $8.75
OLYMPICS For Exercises 36 and 37, use the following information.
There are approximately 3.28 feet in 1 meter.
36. Write a proportion that could be used to find the distance in feet of the
110-meter dash.
37. What is the distance in feet of the 110-meter dash?
38. PHOTOGRAPHY Suppose an 8” 10” photo is reduced so that the
width of the new photo is 4.5 inches. What is the length of the new photo?
CURRENCY For Exercises 39 and 40, use the following information and the
table shown.
The table shows the exchange rates for certain
Country Rate
countries compared to the U.S. dollar on a
United Kingdom 0.667
given day.
Egypt 3.481
39. What is the cost of an item in U.S. dollars if it Australia 1.712
costs 14.99 in British pounds?
China 8.280
40. Find the cost of an item in U.S. dollars if it costs
12.50 in Egyptian pounds.
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Lesson 6-2 Using Proportions 273