PLEASE HELP DUE IN 29 MINS Which of the following is a rotational symmetry of a regular nonagon (9-sided
shape)?
120
140
1260
45

F(x) = 1/x g(x)=x-4 can you evaluate (g*f)(0) ? why or why not?

(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.)

How is this equation completed? i cannot find any examples in the book.