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Chapter 6: Q18. (page 288)
Use algebra to solve the proportion.
The solution is .
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Explain how to use equivalent ratios to solve the proportion.
Estimate A store sells 16 cookies for $11.88. Estimate the cost per cookie. Explain how you made your estimate.
Write the equivalent rate.
In 2002, Khalid Khannouchi set the world record for a marathon when he ran 26.2 miles in 2 hours, 5 minutes, and 38 seconds. Round your answers to the nearest tenth.
a. Find Khannouchi’s rate in miles per hour.
b. Find Khannouchi’s rate in miles per minute.
c. Find Khannouchi’s rate in feet per minute.
Tell whether the ratio is in simplest form. If not, write it in simplest form. Then write the ratio in two other ways.
28 to 10
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