The diagonals of parallelogram ABCD intersect at P. Which statements must be true? Select all that apply.

What is the measure of ac? 5 units 13 units 26 units 39 units 3x- 2b 6x + 9

Which value of m will create a system of parallel lines with no solution? y = mx - 6 8x - 4y = 12

(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.)