Modeling with proportions

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Presentation transcript:

Modeling with proportions 4.4 Notes Modeling with proportions

Warm-UP Solve for x. Leave answer as a simplified fraction. If these ratios are equal, then what’s another equation that’s true using these four variables. KNOWN AS: Cross Product Property

Vocabulary Ratio: compares quantities by division (think fraction) Example: Proportion: a statement that says two ratios (fractions) are equal

Using Cross Products Solve each proportion. 1) 2)

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Application: Capture/Recapture Wildlife biologists catch, tag, and release 120 deer back into a wildlife refuge. Two weeks later they observe a sample of 150 deer, 25 of which are tagged. Approximately how many deer are in the refuge?

4.4 HW P. 259-260 # 13-17(odd), 25-29(odd), 34-36