math

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a photo 5 inches wide and 7 inches long is enlarged. The sides of the new photo are in proportion to the original. The new photo is 14 inches wide. how do i find the length

  • math -

    us proportions, then cross multiply:

    5/7 = 14/x

    5*x = 7*14

    5x = 98

    5x/5 = 98/5

    x = 19.6 inches in length

  • math -

    This is a good problem for a proportion. Let x equal the new length.

    5/14 = 7/x

    Cross multiply:

    5x = 98
    x = 19.6

  • math -

    7.6x-3.5x= -123

  • math -

    7.6x-3.5x= -123

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