Mathematics, 28.09.2021 02:00 charlybraun200094
Derive the equation of the parabola with a focus at (2, 4) and a directrix of y = 8. (2 points)
f(x) = −(x − 2)2 + 6
f(x) = (x − 2)2 + 6
f(x) = −(x + 2)2 + 8
f(x) = (x + 2)2 + 8
Answers: 1
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The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%
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The first few steps in solving the quadratic equation 9x2 + 49x = 22 ? 5x by completing the square are shown. 9x2 + 49x = 22 ? 5x 9x2 + 54x = 22 9(x2 + 6x) = 22 which is the best step to do next to solve the equation by completing the square? 9(x2 + 6x + 3) = 25 9(x2 + 6x + 3) = 49 9(x2 + 6x + 9) = 31 9(x2 + 6x + 9) = 103
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Derive the equation of the parabola with a focus at (2, 4) and a directrix of y = 8. (2 points)
f(...
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