What is 0.64 as a fraction in its simplest form

(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.)

3x = 729 solve for x plz . it's urgent. will mark

Graph the system of equations. {6x−4y=−244x−8y=−32 use the line tool to graph the lines.