



Use cross-multiplication to solve for the unknown.
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tỷ số và tỷ lệ 2in1
- Give an example. How can ratios and proportions be used in problems involving simple and compound interest?
- How do you solve problems involving partial variation? Discuss the historical development of the concepts of ratio and proportion.
- Calculate the total amount of salt and the total volume of the mixture.
- Explain the relationship between two directly proportional quantities.
- Describe how to use ratios to find unknown quantities. Problem 6 What is the ratio of the area of a square with side length 3 cm to the area of a square with side length 6 cm?
- Give examples of technological tools and their applications.
- Explain the addition property, subtraction property, etc.
- Give an example of an inverse proportion. If y is inversely proportional to x, and y = 6 when x = 3, find y when x = 2.
- Give an example and its mathematical formulation.
- Use the inverse relationship between speed and time.
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