Which of the following statements incorrectly describes the line segment xy?

(picture below.)
a. it contains all points between x and y.
b. it is a straight path connecting two points.
c. it is the only possible path between x and y.

The head librarian at the library of congress has asked her assistant for an interval estimate of the mean number of books checked out each day. the assistant provides the following interval estimate: from 740 to 920 books per day. what is an efficient, unbiased point estimate of the number of books checked out each day at the library of congress?

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. how many hours after the truck's departure will the two meet?

Use the squared identities to simplify sin^2x cos^2x