Hurry

in the diagram of circle a, what is the measure of ∠xyz?

35°
70°
75°
140°

The mean of a set of data is -3.82 and its standard deviation is 2.31. find the z score for a value of 3.99.

There is diarrhea on the floor. what do i do? my mum gonna see that i diarrhea on the floor! * don't report, i'm serious! *

Is trapezoid abdc the result of a dilation of trapezoid mnpq by a scale factor of ? why or why not? yes, because ab and cd are each the lengths mn and qp. yes, because sides ab and cd are parallel to sides mn and qp. no, because ab is the length mn but cd is the length qp. no, because sides ab and cd have different slopes from sides mn and qp.