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EXAMPLE 5

You work 4 hours and earn $36 . What is your earning rate?. You travel for 2.5 hours at 50 miles per hour. How far do you go?. 36 dollars. 4 hours. 50 miles. (2.5 hours ). 1 hour. EXAMPLE 5. Use unit analysis with operations. SOLUTION. = 9 dollars per hour. SOLUTION.

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EXAMPLE 5

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  1. You work 4 hours and earn $36. What is your earning rate? You travel for 2.5 hours at 50 miles per hour. How far do you go? 36dollars 4hours 50miles (2.5hours) 1hour EXAMPLE 5 Use unit analysis with operations SOLUTION = 9dollars per hour SOLUTION = 125 miles

  2. 5280feet 1hour 1minute 45miles You drive 45 miles per hour. What is your speed in feet per second? 1mile 60seconds 60minutes 1hour EXAMPLE 5 Use unit analysis with operations SOLUTION = 66 feet per second

  3. Driving Distance Convert the distance from Montpelier to Montreal to kilometers. Convert the distance from Montreal to Quebec City to miles. EXAMPLE 6 Use unit analysis with conversions The distance from Montpelier, Vermont, to Montreal, Canada, is about 132 miles. The distance from Montreal to Quebec City is about 253 kilometers.

  4. 1.61kilometers 213 kilometers 132miles 1mile 1mile 253kilometers 157 miles 1.61kilometers EXAMPLE 6 Use unit analysis with conversions SOLUTION

  5. You work 6 hours and earn $69. What is your earning rate? How long does it take to travel 180 miles at 40 milesper hour? 69dollars 6hours 180miles 1hour 40 miles for Examples 5 and 6 GUIDED PRACTICE Solve the problem. Use unit analysis to check your work. SOLUTION = 11.5dollars per hour SOLUTION = 4.5 hour

  6. You drive 60 kilometers per hour. What is your speed in miles per hour? 1mile 60km 1.61km 1hour for Examples 5 and 6 GUIDED PRACTICE Solve the problem. Use unit analysis to check your work. SOLUTION = about 37 mph

  7. 150yardstofeet 3 feet 150 yard 1 yard for Examples 5 and 6 GUIDED PRACTICE Perform the indicated conversion. SOLUTION = 450 ft

  8. 4 gallons to pints 8 pints 4 gallon 1 gallon for Examples 5 and 6 GUIDED PRACTICE Perform the indicated conversion. SOLUTION = 32 pints

  9. 16 years to seconds 60 seconds 1 minute 16 years 60 minutes 24 hours 1 hour 365 days 1 day 1 year for Examples 5 and 6 GUIDED PRACTICE Perform the indicated conversion. SOLUTION = 504,576,000 sec

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