In a class (sample) of 10 students, the grades have mean 15 and variance 16.
If a student whose grade is 24 left the class, then
the new variance of this sample will be

Rectangle pqrs has vertices p(1, 4), q(6, 4), r(6, 1), and s(1, 1). without graphing, find the new coordinates of the vertices of the rectangle after a reflection over the x-axis and then another reflection over the y-axis.

Anurse is administering medications to a client and mistakenly gives hydroxyzine instead of hydralazine. the nurse should monitor the client for which of the following adverse effects? a. edema b. diplopia c. fever d. sedation

Anurse on a medical unit is administering heparin by continuous iv infusion to a client who has a pulmonary embolism. the client’s most recent aptt is 70 seconds. which of the following actions should the nurse take? a. increase the iv infusion rate. b. decrease the iv infusion rate. c. discontinue the iv infusion. d. continue the iv infusion.