For which polygon is the sum of the interior angles equals to 720

15 point ! ~ see if you know the answer to both you!

(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.)

For a function f(x), a) if f(7) = 22 then f^-1(22) = b) f^-1(f(c)) =