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anonymous

  • one year ago

Write a proportion for the following problem. Eric is making a scale drawing of the ground floor of his house. If the scale is 2 in = 5 ft, what number of inches will he use for a length of 55 ft? A. 2/5 = 55/x B. 2/55 = x/5 C. 2/5 = x/55

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  1. anonymous
    • one year ago
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    @Directrix

  2. jdoe0001
    • one year ago
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    \(\begin{array}{ccllll} in&ft \\\hline\\ 2&5\\ x&55 \end{array}\implies \cfrac{2}{x}=\cfrac{5}{55}\)

  3. jdoe0001
    • one year ago
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    notice, just line up the corresponding units vertically

  4. anonymous
    • one year ago
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    yes @jdoe0001

  5. anonymous
    • one year ago
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    would it be C ? @jdoe0001

  6. jdoe0001
    • one year ago
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    hmmm yeap, that'd work, since it yields the same equation

  7. jim_thompson5910
    • one year ago
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    Use jdoe0001's table to read down the columns to get \[\Large \frac{2}{x} = \frac{5}{55}\] or read across the rows to get \[\Large \frac{2}{5} = \frac{x}{55}\] The two equations are equivalent to one another. You can also flip the fractions of both sides to get other equivalent equations.

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