Marcy has 567 earmuffs in stock .If she can put 18 earmuffs on each shelf about how many shelves does she need for all the earmuffs.

If the measure of xyz is 81 what is the measure of yz

Solve 3x-18=2y and 5x-6y=6 by elimination show work

(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.)