How are ratios and proportions used in chemistry (e.g., stoichiometry)? Explain the concept of a scale factor.
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tỷ số và tỉ lệ 2 in 1
- The sides of a quadrilateral are in the ratio 2 3 4 5. If the perimeter is 42 cm, what are the lengths of the sides? Solve for z (8z-1)/3 = (4z+5)/2.
- Give an example of direct proportion. Solve for m m/8 = 21/24.
- How are ratios and proportions used in chemistry (e.g., stoichiometry)? Explain the concept of a scale factor.
- Ratio and Proportion Problem Solving Strategies
- Real-World Ratio Applications Solve for x (x+2)/3 = 8/2.
- Two numbers are in the ratio 2 5. If their difference is 15, what are the two numbers? Solve for v (7v+3)/5 = (2v-1)/3.
- What are proportional parts? Solve for z 16/10 = 24/z.
- The ratio of the ages of two friends is 3 4. If the sum of their ages is 35 years, what are their individual ages? Solve for t (6t-5)/7 = (2t+3)/2.
- Investigate the use of ratios and proportions in physics (e.g., density, velocity). How do you work with ratios involving percentages?
- A store sells coffee beans and tea leaves in the ratio 2 5. If they sell 10 kg of coffee beans, how many kg of tea leaves do they sell? Simplify the ratio 9 27.
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