The gas mileage for a certain vehicle can be approximated by m = −0.04x^2+ 3.6x − 49, where x is the speed of the vehicle in mph. Determine the speed(s) at which the car gets 30 mpg. Round to the nearest mph.

Q: Penelope is A years old, and Odie is B years old. Odie is just 2 years short of being 3 times…

A: we have to find

Q: The value of vers θ is equal to

A:

Q: Solve.  d=nzx, for x

A: Given data: The given expression is d=nzx. The given expression can be written as, d=nzxx=dnz

Q: U 11. Solve for x 165.5 23x + 9 V. 900

A:

Q: Find the positive number which gives the smallest answer when you add its square to 16 times its…

A: Let the number is x So,  when I add its square to 16 times its reciprocal, then I get: We have to…

Q: A 25-year old woman burns 300−80t cal/hr while walking on her treadmill. Her caloric intake from…

A: We are given that a 25 year old woman burns 300 - 80t cal/hour while walking on treadmill and her…

Q: Solve for x. S. (14x – 15)°- T 139° V U

A: Explanation of the answer is as follows

Q: A man takes 40 mg of a certain medicine. Each hour, the amount of medicine in the man's system…

A:

Q: Solve for x. S. (14X- 15)- T. 139° V

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: a car left xanadu at 6:45 h and arrived in zenoland at 7:05 h. it travelled at an average speed of…

A: Given that  a car left xanadu at 6:45 h and arrived in zenoland at 7:05 h. it travelled at an…

Q: S is 4 years older than J. 8 years ago, s was twice as old than J. What are the ages of S & J?

A: Let the age of S be x years, then the age of J is (x - 4) years, because S is 4 years older than J.

Q: Find a positive number for which the sum of its reciprocal and four times its square is the least.

A: Let x be a number. According to question

Q: A truck gets 600/x miles per gallon when driven at a constant speed of x mph, where 40 < x <…

A: It can go 600/x miles in 1 gallon. And cost  of 1 gallon is 2.80.So cost for (600/x) miles =…

Q: Differentiate. 4) f(x) = e2x

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: A person x inches tall has a pulse rate of y beats per​ minute, as given approximately by y=588x−1/2…

A:

Q: Solve for x: 2log,5(x)+4=3. Round your answer to 3 decimal places.

A:

Q: S V1 + x dx 5.

A:

Q: Solve for the value of x. 5x 3 3x+2 F E.

A:

Q: If rain is falling at a rate of 2.47 inches per hour, how much rain would you expect after 3.5…

A: Given: Rate of falling of rain= 2.47 inches per hour and we have to find out the rain after 3.5…

Q: To approximate the profit from the production and sale of the 145th skirt, what value do you plug…

A: P(x) denotes the profit function and P'(x) denotes the marginal profit function.

Q: The half-life of a drug in the bloodstream is 9 hours. By what factor does the concentrationof the…

A:

Q: The median height of boys less than 5 years old can be estimated using the formula H = 2.9/x + 20.1,…

A:

Q: As the relative humidity increases, the temperature seems higher than it is.  The formula T = 0.101x…

A:

Q: One type of uranium has a radioactive decay rate of 0.4% per day. If 40 pounds of this uranium is…

A: Formula for radioactive decay: y = y01-rx where y0 = amount of uranium available today r = rate of…

Q: A manufacturing company purchased a new diamond-tipped saw blade for $9,300 and it will depreciate…

A: In the question Initial cost of the diamond-tipped saw blade is $9300 Depreciate time 6 years

Q: What is the family of the equation y=2* linear? quadratic? or exponential? HY

A: Solve the following

Q: Use an algebraic method of successive approximation to solve 3x + 5x - 17 = 0, correct to 3…

A:

Q: 31x+ 3 192°

A:

Q: A 25-year old woman burns 250−60t cal/hr while walking on her treadmill. Her caloric intake from…

A:

Q: The United States is not building many nuclear power plants, but the ones it has are running at…

A: Graph of y = 1.9467t + 70.082

Q: The gross domestic product (in billions of dollars) can be approximated by P(t) = 567 +t(36t0 -…

A: a) Use the product rule of differentiation to differentiate the function Pt.

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

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

Q: Suppose that the water level of a river is 34 feet and that it is receding at a rate of 0.5 feet per…

A: Given that,  intial water level of river =34 feet receding rate of water level = 0.5 feet per day…

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: Jane has twice as much money invested at 5% annual intrest as she does at 4%. If her yearly income…

A:

Q: A 25-year old woman burns 350−30t cal/hr while walking on her treadmill. Her caloric intake from…

A: To find the net decrease in calories after walking for 2 hours.

Q: Solve for x. (6x – 21)° T R S

A: Given geometry is looks like a square and PR & QS are diognals which devide the each right…

Q: If the amount of drug in a person's blood after t hours is  (t) = t/(t2 + 25), when will the drug…

A:

Q: The population of South Carolina can be approximated using the formula y = 1.264e0.011lx, where x is…

A: This question related to exponent function.

Q: A 25-year old woman burns 150 – 50t cal/hr while walking on her treadmill. Her caloric intake from…

A:

Q: A 25-year old woman burns 300 – 40t cal/hr while walking on her treadmill. Her caloric intake from…

A:

Q: A 25-year old woman burns 250−50tt cal/hr while walking on her treadmill. Her caloric intake from…

A:

Q: The number of retail drug prescriptions (in millions) can be approximated by y = 81.26x + 2928.76,…

A: Given,             the approximated function of the number             of retail drug prescriptions…

Q: Solve for X T. Sx+10 58 11x+2

A:

Q: Find an equation to represent the current salary after     x years of employment if the starting…

A:

Q: Solve for x. Round to the nearest tenth. PLEASE HELP ME ASAP

A: Since you have asked multiple questions, we will solve the first question for you. If you want the…

Q: Solve for x e^7x =20

A:

Polynomials

Try substituting 1. You will get 6 and not 0. Try other real values also. What About -2? Let us check.