math

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a boy is walking at dusk and notices his shado from a nearby street light. the boy is 5 feet tall and the street light is 12 feet above the ground. When the boy is 4 feet from the base of the street light how long will his shadow be?

  • math -

    draw a diagram. If the shadow has length s,

    s/5 = (s+4)/12
    s = 20/7

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