Which is an incorrect rounding for 53.845? I'm trying to do the I-Ready diagnostic and I'm try my best to pass is can you help me?

What is the missing constant term in the perfect square that starts with x^2 -20x

(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.)

When i'm with my factor 5, my prodect is 20 .when i'm with my addend 6' my sum is 10.what number am i