Write a 2 column proof for the following statement. if line segment qr is congruent to line segment st, then line segment qs is congruent to line segment rt

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

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.

How do i put 3(x+7) in distributive property