A book is 9 inches wide and 13.5 inches tall.

What will the area of the front of the book?

Find the length of cu, the triangles are similar.

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

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.