The ramp shown below is used to move crates of apples to loading docks at different heights. When the horizontal distance AB is 12. BC is 4.


  1. Answer:
    9 m
    Step-by-step explanation:
    ΔABC and ΔADE are similar. That means:
    the sides corresponding to each other are proportional.
    We can set up ratio for two triangle and solve for DE.
    AB corresponds to AD (AB + BD)
    BC corresponds to DE
    hence, the length of DE is 9 m

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