Which expression represents the sum of 2/3m - 1 1/6 and 5/6m - 1 1/3

Solve the system of equations. y= 2x y= x^2 - 15

(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.)

Which of the following scenarios demonstrates an exponential decay