The width, w, of a rectangular playground is x+3. the area of the playground is x^3-7x+6. what is an expression for the length of the playground?

If 1/2 is half of 1, what is 1/2 of 2,3, and 4?

The amount of energy it takes to lift a box might be a function of which of the following

(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.)