SOLUTION: Joanne tosses an apple seed on the ground. It travels along a parabola with the equation y= -x^2 + 4. Assume the seed was thrown from a height of 4ft. How many feet away from joann

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Question 693944: Joanne tosses an apple seed on the ground. It travels along a parabola with the equation y= -x^2 + 4. Assume the seed was thrown from a height of 4ft. How many feet away from joanne will the apple seed land? Explain.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Joanne tosses an apple seed on the ground. It travels along a parabola with the equation y= -x^2 + 4. Assume the seed was thrown from a height of 4ft. How many feet away from joanne will the apple seed land? Explain.
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graph%28400%2C400%2C-10%2C10%2C-10%2C10%2C-x%5E2%2B4%29
The ground is the x-axis.
Solve for the x-intercept.
Let y = 0
-x^2+4 = 0
x^2 = 4
x = +2 or x = -2.
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Find the distance from (0,4) to (2,0)
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distance = sqrt[(2-0)^2 + (0-4)^2] = sqrt(4+16) = sqrt(20) = 2sqrt(5) feet
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Note: The answer may be 2 ft. if the distance requested is from
her feet to the seed.
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Cheers,
Stan H.