Pipe A can fill reservoir in 5 hours, the same reservoir can be filled by pipe B in 4 hours. There is pipe C at the bottom of reservoir which can empty it in 8 hours. If all the three pipes are opened simultaneously, then in how much time the tank will fill?

Write an algebraic expression for the word expression the quotient of c and 8

Over the last 8 nights, elyse earned the following in tips: {105, 120, 84, 95, 100, 132, 140}. if she earns $140 a night for the next four nights, which measure of center would increase more, the mean or median?

(b) suppose that consolidated power decides to use a level of significance of α = .05, and suppose a random sample of 100 temperature readings is obtained. if the sample mean of the 100 temperature readings is x⎯⎯ = 60.990, test h0 versus ha and determine whether the power plant should be shut down and the cooling system repaired. perform the hypothesis test by using a critical value and a p-value. assume σ = 5. (round your z to 2 decimal places and p-value to 4 decimal places.)