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Gas mileage (miles per gallon, mpg) can be approximated by a quadratic function of speed. For a particular automobile, assume the vertex occurs when the speed is 50 miles per hour (the mpg will be 30 ). a. Write a quadratic function that models this relationship, assuming 70 miles per hour corresponds to 25 mpg. b. What gas mileage would you expect for this car driving 90 miles per hour? (GRAPH CANNOT COPY) | Numerade
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Find the Value of M So that the Quadratic Equation Mx (X − 7) 49 = 0 Has Two Equal Roots. - Mathematics | Shaalaa.com
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SOLVED:Gas mileage is tested for a car under different driving conditions. At lower speeds, the car is driven in stop and go traffic. At higher speeds, the car must overcome more wind resistance. The variable x given in the table represents the speed (in mph) for a compact car, and m(x) represents the gas mileage (in mpg ). x 25 30 35 40 45 m(x) 22.7 25.1 27.9 30.8 31.9 x 50 55 60 65 m(x) 30.9 28.4 24.2 21.9 a.
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Mileage study. The effectiveness of a new experimental overdrive gear in reducing gasoline consumption was studied in 12 trials with a light truck equipped with this gear. In the data that follow, Xi denotes the constant speed (in miles per hour) on the test track in the i th trial and Yi denotes miles per gallon obtained. Second-order regression model ( 8.2 ) with independent normal error terms is expected to be appropriate. a Fit regression model (8.2) . Plot the fitted regression function and
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