Q1). A={1,2,3} B={2,3,4}. Find (A∩B) xA

Solve the given system of equations. 2y= -x+9 , 3x-6= -15

65% of students in your school participate in at least one after school activity. if there are 980 students in you school, how many do not participate in an after school activity?

(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.)