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anonymous

  • one year ago

Not understanding how they got from 10.4y = 175 to y = 16.826 (Pictures) Chau wants to measure the height of a tree. He sights the top of the tree, using a mirror that is lying flat on the ground. The mirror is 35ft from the tree, and Chau is standing 10.4ft from the mirror, as shown in the figure. His eyes are 5ft above the ground. How tall is the tree? Round your answer to the nearest foot.

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  1. anonymous
    • one year ago
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  2. anonymous
    • one year ago
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    Not understanding how they got from 10.4y = 175 to y = 16.826

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  3. UsukiDoll
    • one year ago
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    those guys divided 10.4 on both sides

  4. UsukiDoll
    • one year ago
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    because we need y by itself

  5. anonymous
    • one year ago
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    They are using proportions because they are similar triangle

  6. UsukiDoll
    • one year ago
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    |dw:1436945129111:dw|

  7. UsukiDoll
    • one year ago
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    y = 175/10.4 does lead to y = 16.826

  8. anonymous
    • one year ago
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    oooh duh , thanks : D

  9. UsukiDoll
    • one year ago
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    you're welcome :)

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