Solve the system of equations: 2x + y -2Z =-1
3x-3y - Z =5
x-2y+3Z = 6

URGENT PLEASE PLEASE PLEASE HELP with working steps please

X = 1
Y = -1
Z = 1​

(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.)