Transcript 2-6 Ratios Rates and Conversions

Homework Answers
2-6 P. 144 #s 51-66 all
51) 6
52)
53) 92
54) 5
55) 3
56) -4
57) 3
58) Identity
59) No solution
60) 147
61) -40
62) 567
63) 100
64) 3
65) 8/5
66) 7/45
2-6 Ratios, Rates, and
Conversions
Objective: To find ratios and rates.
To convert units and rates
Warm-Up:
Two Olympic athletes can run the races in
the times shown. Who is the faster runner?
How do you know?
Ratio
A comparison of two numbers by division
Could be written the following ways
𝑎
𝑏
𝑎: 𝑏
𝑎 𝑡𝑜 𝑏
Rate
A ratio that compares different units of
measure
Unit Rate
A rate with a denominator of 1
You are shopping for T-shirts. Which
store offers the best deal?
Store A: $25 for 2 shirts
Store B: $45 for 4 shirts
Store C: $30 for 3 shirts
Conversions
To convert between units of measure
you multiply by a Conversion Factor.
Conversion Factor-A ratio of two
equivalent measures in different units
that equals one.
i.e.
1 𝑓𝑡
12 𝑖𝑛
What is 330 min in hours?
Convert 5 ft. 3 in. into inches
What is 1250 cm converted to meters?
The CN Tower in Toronto, Canada is about
1815 ft. tall. About how many meters tall is
the tower? Use the fact that 1𝑚 ≈ 3.28 𝑓𝑡.
A Student ran the 50-yd dash in 5.8 s. At what
speed did the student run in miles per hour?
Round your answer to the nearest tenth
An Athlete ran a sprint of 100 ft. in 3.1 s.
At what speed was the athlete running in
miles per hour? Round to the nearest
miles per hour.
Classwork
2-6 P. 119 #s 9-29 odd
Homework
2-6 P. 119 #s 10-30 even
Classwork Answers
2-6 P. 119 #s 9-29 odd
9) Olga
11) 189 ft
13) 40 oz
15) 240 s
17) About 8.2 m
19) 7900 cents
21) About 35 in.
23) 1.875 gal/h
25) 87
27) 150
29) 18
Homework Answers
2-6 P. 119 #s 10-30 even
10) Bellingham, WA
12) 7 d
14) 2 m
16) 1.5 L
18) About 11 lb
20) About 2.8 L
22) About 61 cm
24) $0.09 a day
26) About 4.8
28) 1/120
30) About 65.8
2-6 Ratios, Rates, and
Conversions
Objective: To find ratios and rates.
To convert units and rates
Homework
2-6 Practice Form G #s 16-22 even