N + 6f (n = 9 and f= 3)

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?

(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.)