Mathematics, 13.10.2020 14:01 yolo1430
You fill up your car with 15 gallons of premium gasoline and fill up a 5 gallon gas can with regular gasoline for various appliances around the house. You pay the cashier $42. The price of regular gasoline is 20 cents less per gallon that the price of premium gasoline. Find the price per gallon of regular and premium gasoline.
a) Define the variables that will be in the system.
b) Write the system of equations for the situation.
Answers: 3
Mathematics, 21.06.2019 19:50
Prove (a) cosh2(x) ā sinh2(x) = 1 and (b) 1 ā tanh 2(x) = sech 2(x). solution (a) cosh2(x) ā sinh2(x) = ex + eāx 2 2 ā 2 = e2x + 2 + eā2x 4 ā = 4 = . (b) we start with the identity proved in part (a): cosh2(x) ā sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 ā sinh2(x) cosh2(x) = 1 or 1 ā tanh 2(x) = .
Answers: 3
Mathematics, 22.06.2019 00:20
Which shows how to solve the equation 3/4x=6 for x in one step?
Answers: 2
Mathematics, 22.06.2019 02:50
What is the value of x in the equation 3x4y65, when y=4?
Answers: 1
You fill up your car with 15 gallons of premium gasoline and fill up a 5 gallon gas can with regular...
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