Solve the equation. 31-12n=211

To determine her power usage , Keri divides up her day into three parts: morning, afternoon, and evening. She then measures her power usage at 4 randomly selected times during each part of the day. What type of sampling did she use?

A laboratory technician can clean 34 pipettes every hour with an automatic washer. How many can he clean in 12 minutes? (Hint: Both time periods must be in the same unit of measurement)

Find the range of the function. (x) = 10-x^2

Rewrite with only sin x and cos x. sin 3x

What is 32,020.20 rounded to the nearest square mile

A bag contains of cards 2 red 3yellow, 3 blue What is the probability that you will draw a red card and then a yellow card

What is the ratio of 0.9 and 0.8

A quadrilateral has sides that measures 12 centimeters, 10 centimeters, 10 centimeters, and 5 centimeters. The side that measures 12 centimeters is parallel to the side that measures 5 centimeters. what is the figure?

Is 27 divisble by 2 3 4 5 6 9 or 10

What is the variance with the data 8 2 4 3 5