50 whole points.
hi, i would like on this question.
show step by step of how you got the answer.
13 + w/7 = -18
w/7 is a fraction.
once again, show step by step of how you got the answer.

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

How to simply and write the answer n a whole number

(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.)