To solve 5/7 - 2/n = 1/21

We must first determine the shape of a rectangular prisms _ a0 to find area of the prism

Type the correct answer in the box. use numerals instead of words. if necessary use / for the fraction bar.

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?