Given: the coordinates of isosceles trapezoid JKLM are J(-b, c), K(b, c), L(a,0), and M(-a,0). Prove: the diagonals of an isosceles trapezoid are congruent As part of the proof, find the length of KM
A.) a² + b² + c²
B.) (a + b)² + c² C.) (a- b)² + c²
D.) (-a + b)² + c²

Which shows the pre image of triangle xyz

Suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet.

An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.