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2-7 Solving Proportions. Proportion. An equation that states that two ratios are equal. Solving a proportion using cross products. 7 = m 8 12. Use cross products Multiply 7 x 12 and 8 x m 8m = 84 Solve for m.
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Proportion • An equation that states that two ratios are equal
Solving a proportion using cross products • 7 = m 8 12 • Use cross products • Multiply 7 x 12 and 8 x m • 8m = 84 • Solve for m http://www.pearsonsuccessnet.com/snpapp/iText/products/0-13-368848-8-01/media/National/NA_SDC_A1/A1G0207_01SOP.mp4
Q = 4 8 5 • -3 = x 4 26
Solve a Multi-Step Proportion • B – 8 = b + 3 5 4 • http://www.pearsonsuccessnet.com/snpapp/iText/products/0-13-368848-8-01/media/National/NA_SDC_A1/A1G0207_03SOP.mp4
A – 2 = 2 9 3
Using a proportion to solve a problem http://www.pearsonsuccessnet.com/snpapp/iText/products/0-13-368848-8-01/media/National/NA_SDC_A1/A1G0207_04SOP.mp4
Homework 2-7 Practice