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anonymous

  • 5 years ago

Using the diagram below, determine the length of AB if ABC ADE, AD = 4, AE = 5, and AC = 7.

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  1. anonymous
    • 5 years ago
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  2. anonymous
    • 5 years ago
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    ABC congruent with ADE? AD/AE = AB/AC 4/5 = AB/7 AB = 28/5 = 5.6

  3. anonymous
    • 5 years ago
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    as ABC and ADE are similar triangles so their sides will be proportional.. so, AD/AE=AB/AC =>4/5=AB/7 therefore, AB=28/5=5.6

  4. anonymous
    • 5 years ago
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    do you get it?

  5. anonymous
    • 5 years ago
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    Um well, Not all that much. I get all of it up to 28/5=5.6

  6. anonymous
    • 5 years ago
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    check out the link http://www.mathsteacher.com.au/year9/ch13_geometry/08_similar/similar.htm hope this would help

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