Janet, an experienced shipping clerk, can fill a certain order in 12 hours. Bill, a new clerk, needs 13 hours to do the same job. Working together, how long will it take
them to fill the order?
What is the solution?

Umm.. just started this 2day and its not on my notes(p′︵‵。)

Given that de, df, and ef are midsegments of △abc, and de=3.2 feet, ef=4 feet, and df=2.4 feet, the perimeter of △abc is .

The administrator of a large assisted living facility wanted to know the average age of the residents living at the facility. he randomly selected 12 residents and determined their age, listed here: 80, 65, 75, 83, 68, 73, 88, 79, 94, 72, 79, 68 what's the average age of the sample of residents? a. 79 years old b. 68 years old c. 75 years old d. 77 years old