Mathematics, 29.10.2019 23:31 kholman
Agas station earns $2.60 in revenue for each gallon of regular gas it sells, $2.75 for each gallon of midgrade gas, and $2.90 for each gallon of premium gas. let x1, x2, and x3 denote the numbers of gallons of regular, midgrade, and premium gasoline sold in a day. assume that x1, x2, and x3 have means μ1 = 1500, μ2 = 500, and μ3 = 300, and standard deviations σ1 = 180, σ2 = 90, and σ3 = 40, respectively. a. find the mean daily revenue. b. assuming x1, x2, and x3 to be independent, find the standard deviation of the daily revenue.
Answers: 3
Mathematics, 21.06.2019 19:30
Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?
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Mathematics, 21.06.2019 20:00
Someone answer asap for ! the following statements are true about the coins calvin and sasha have collected. * calvin and sasha has the same amount of money. * calvin has only quarters. * sasha has dimes, nickels, and pennies * calvin has the same number of quarters as sasha has dimes. * sasha has $1.95 in coins that are not dimes. exactly how many quarters does calvin have?
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Mathematics, 21.06.2019 21:30
Olive's solar powered scooter travels at a rate of 30 miles per hour. what equation can she use to calculate her distance with relation to the time she traveled? h=hours m=miles 1. h=m+30 2. m=30h 3. m=h+30 4. h=30m
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Agas station earns $2.60 in revenue for each gallon of regular gas it sells, $2.75 for each gallon o...
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