The gas mileage for a certain vehicle can be approximated by m=-0.03x2 + 3.7x-43, where x is the speed of the vehicle in mph. Determine the speed(s) at which the car gets 20 mpg. Round to the nearest mph.

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A:

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A: Value of car is represented by v(x) after x years.v(x)=25000(0.86)x

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A: The equation is

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A: The cost of renting a saw tool can be broken as, $35 for the first hour $20 for each additional hour…

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Q: Solve for t.   e0.05t - 4e-0.06t = 0

A: e0.05t-4e-0.06t=0

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A:

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A: Given a projectile path is represented by the equation ht=-4.9t2+30t+1.5

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A: Given Data: The initial velocity of the object is: dhdtt=0=120 ft/s The formula for the height of…

Q: Allen works as a pest control technician. Let y represent his total pay (in dollars) for the month.…

A: Allen works as a pest control technician. Let y represent his total pay (in dollars) for the month.…

Q: The milligrams of aspirin in a person's body is given by the equation a = 500 · (÷)', where t is the…

A: this is exponential equation

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Q: For Exercise, solve for the indicated variable.5x + y = −18 for y

A: Consider the given equation.

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Q: A person x inches tall has a pulse rate of y beats per minute, as given approximately by -1/3 y =…

A: Please refer to the image below.

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A: NOTE: Refresh your page if you can't see any equations. . the given equation is  when the ball hits…

Q: solve the equation for x y=0.073x+1.42

A: Calculation:The given equation is y = 0.073x + 1.42.

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Q: Solve the equation for x. 4x x =D15 17 X

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Q: The gas mileage for a certain vehicle can be approximated by m = −0.04x^2+ 3.6x − 49, where x is the…

A: If x is the speed of the vehicle in mph, the expression of gas mileage given is:

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A: To find the value of x in the given figure.

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A: The chain rule : fgx'=f'gx.gx ddxax=ax.lna

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Q: Solve for y X2 =9e?y

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Q: Solve the given DEQ by undetermined coefficients. y(4) – y" = 4x + 2xe¬×

A: Introduction:   It is given that the differential equation is y(4)-y"=4x+2xe-x. We have to solve…

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A: Let l be the length of the rectangle , h be the height and x be the breadth of the rectangular box.…

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A: The understanding of algebric equation is required in order to get it.

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A: Graph of y = 1.9467t + 70.082

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A: A person  x inches tall has  a pulse rate of y beats per miniute , is given by y=576 x-13      for…

Q: The time t, in seconds, that it takes a car to accelerate to x mph can be described by t =…

A: The time t, in seconds, that it takes a car to accelerate to x mph can be described by t =…

Q: It takes a train 15 hours to travel from Chicago to New York City and the distance traveled by the…

A: distance =800 miles time = 15 hours average speed = s

Q: Ryan and Susan competed in a race over 4 km. Ryan ran at a constant speed. Sophie, however, ran the…

A: This question is related to distance, speed and time, we will use basic speed time formulas to solve…

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Q: The time t, in seconds, that it takes a car to accelerate to x mph can be described by t =…

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Q: Solve for x. 20V3 60° A 60 B 20 C10/3 D 10V2

A: Solve as solved below . Use trigonometric ratios to find the answer. Cos x is (adjacent side) /…

Q: For Exercise, solve for the indicated variable. 3x− y= −8 for x

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Q: A car is traveling down a highway at a constant speed, described by the equation D=65t , where…

A: 1) Given, A car is traveling down a highway at a constant speed, described by the equation d = 65t…

Q: How many solutions will f(x) have? Explain how you determined your answer.

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Q: D. Solve dx2 from the following 1. y = 8x* – 12 x + 6x² – 9 2. y= (4x-9)²

A: d2ydx2 =ddx(dydx)  is called the double derivative of y→dxndx = nxn-1.→d(constant term)dx = 0

Q: An object is projected upward with a velocity of 50 feet per second from a starting height of 9…

A: The initial velocity of the object is: 50 ft/sec. Initial height of the object is: 9 ft. Height of…