Find the hcf and lcm of the following. (1) 189 and 84. (2) 315 and 720. (3)616 and 392. (4) 1008 and 1764. (5)560,140 and 224. (6) 378, 567 and 252. (7) 435 and 261 (8) 16, 28, 44, and 68

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

The base of a triangle exceeds the height by 7 centimeters. if the area is 400 square centimeters, find the length of the base and the height of the triangle.

Write the expression as a single natural logarithm. 2 in a - 4 in y