Determine whether AB and CD with the given coordinates would be parallel, perpendicular, or neither.
1. A(-4, 8), B(4, 10), C(1, 1), D(-2, 13)
Slope of AB=
Slope of CD=
Parallel/Perpendicular/Neither=

(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.)

What is the measure of angle 1? a.28 b.152 c.168 d.64

Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.