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Recall what a ratio is Mr. H's Math World
Finding and Comparing Unit Rates
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What Is a rate?
What is a unit rate?
A rate is a ratio that compares two different quantities with different units
A unit rate is a rate where the denominator of the fraction is equal to 1.
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Using Unit Rates to Make Comparisions
A primary use of unit rates is to make comparisons between 2 or more ratios
Using Unit Rates to Make Comparisions
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Using Unit Rates to Make Comparisions
Using Unit Rates to Make Comparisions
A millimeter (ml) is defined to be 1 cm3 or 1 cubic centimeter. The density of a substance is a unit rate often expressed as g/cm3. The density is the mass of a substance per unit volume.
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Example:
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