What is the empirical formula for a substance if a 200 g sample of it contains 54 grams of nitrogen, 15 grams of hydrogen, and 132.6 grams of chlorine?

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

What is the area of the triangle 10 13 12

The trigonometric ratios sine and secant are reciprocals of each other