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anonymous

  • one year ago

Landon is standing in a hole that is 5.1 ft deep. He throws a rock, and it goes up into the air, out of the hole, and then lands on the ground above. The path of the rock can be modeled by the equation y = -0.005x2 + 0.41x - 5.1, where x is the horizontal distance of the rock, in feet, from Landon and y is the height, in feet, of the rock above the ground. How far horizontally from Landon will the rock land?

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  1. Theloshua
    • one year ago
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    \[y = -0.005x^{2} + 0.41x - 5.1\]

  2. Theloshua
    • one year ago
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    is that the equation?

  3. mathstudent55
    • one year ago
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    You are looking for distance a. |dw:1444311498356:dw|

  4. mathstudent55
    • one year ago
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    |dw:1444311669302:dw|

  5. mathstudent55
    • one year ago
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    The place where the rock lands is at ground level. Notice that the variable y has been defined as the height of the rock, in feet, above ground level.

  6. mathstudent55
    • one year ago
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    What is y where the rock lands?

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