What number must be added to the expression below to complete the square x^2+7x

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

If sr is 4.5cm and tr is 3cm, what is the measure in degrees of angle s?

Asequence is a function whose is the set of natural numbers