An architect is designing a new windmill with four sails. In his ​sketch, the​ sails' center of rotation is the​ origin, (0,0), and the tip of one of the​ sails, point Q​, has coordinates (−6,−3). He wants to make another sketch that shows the windmill after the sails have rotated 90° about their center of rotation. What would be the coordinates of Q′​?

Select the number of ways in which a line and a circle can intersect

Amajor grocery store chain is trying to cut down on waste. currently, they get peaches from two different distributors, whole fruits and green grocer. out of a two large shipments, the manager randomly selects items from both suppliers and counts the number of items that are not sell-able due to bruising, disease or other problems. she then makes a confidence interval. is there a significant difference in the quality of the peaches between the two distributors? 95% ci for pw-pg: (0.064, 0.156)

Which two undefined geometric terms always describe figures with no beginning or end?