Math Practice 101
Homework Explained - Math Practice 101

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Grade 8 McGraw Hill Glencoe - Answer Keys


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  Test Practice  

  • Question 19 (request help)

    Horatio is 6 feet tall and casts a shadow 3 feet long. At the same time, a nearby tower casts a shadow that is 25 feet long.

    Write a proportion Horatio can use to find the height of the tower: _____. Using the proportion, the tower is _____ feet tall.
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  • Question 20 (request help)

    Lenno is 5 feet tall and is using familiar triangles and a mirror to find the height of a telephone pole. The horizontal distance between Lenno and the telephone pole is 28 feet. He places the mirror on the ground 7 feet from himself so that he can see the top of the pole in the mirror's reflection as shown in the figure below.

    Select values to label the diagram with the correct dimensions.

    What is the height of the telephone pole?
  •     feet

  Spiral Review  

Determine whether each pair of polygons is similar. Explain.

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