ASAP BRAINLIEST whoever answers first

Which matrix can be multiplied to the left of a vector matrix to get a new vector matrix ?

(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.)

If each bricks costs and he can only buy one brick how much will it cost him to get the material to put around the outside of his garden?