How does a proportion differ from a ratio? What are the parts of a proportion?
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tỷ số và tỷ lệ 2in1
- Use a series of unit ratios to convert both distance and time units.
- Explain this rule and how it is applied.
- Explain the relationship between the ratio of sides and the ratio of areas of similar figures. Problem 7 Convert a speed of 72 km/h to meters per second.
- What are the benefits and limitations of using technology? Explore the relationship between ratios and logarithmic scales (e.g., decibels).
- Explain the meaning of some common financial ratios.
- Explain the concept of proportionality to a power. If a quantity p is inversely proportional to the square root of q, and p = 10 when q = 9, find p when q = 25.
- Set up an inverse proportion to find the time taken by 6 workers.
- Give an example of converting a percentage to a ratio.
- Explain how wind speed affects the ground speed of an aircraft. Two runners are competing in a race. The ratio of their average speeds is 5 4. If the faster runner finishes the race in 40 minutes, how much longer does the slower runner take?
- Describe how to solve this type of mixture problem with two unknowns. Two grades of sugar costing $30 per kg and $35 per kg are mixed. If the mixture is sold at $33 per kg and a profit of 10% is made, what was the ratio in which the two grades were mixed?
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