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EXOEXOEXO

  • one year ago

a photograph negative measures 1 7/8 inches by 2 1/2 inches. the printed pictures is to have its longer dimension be 4 inches. how long should the shorter dimension be?

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  1. zepdrix
    • one year ago
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    Ooo neat problem :) So this is really important with pictures. We don't want the image to come out all skewed and weird looking. So we need to preserve the proportions.

  2. zepdrix
    • one year ago
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    |dw:1436829225509:dw|Here is a diagram that illustrates the situation we have.

  3. zepdrix
    • one year ago
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    In order to preserve the image, we want these two figures to be `similar`. Which means the ratio of their sides will be equivalent.

  4. zepdrix
    • one year ago
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    \[\large\rm \frac{1\frac{7}{8}}{2\frac{1}{2}}=\frac{x}{4}\]And then maybe do some cross multiplication or something. Whatever you prefer. What do you think? :) Any confusion? Gotta convert those mixed numbers to improper fractions or decimals.

  5. EXOEXOEXO
    • one year ago
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    the answer is 3 inches

  6. zepdrix
    • one year ago
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    Yayyy! Good job \c:/

  7. EXOEXOEXO
    • one year ago
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    thank you

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