Arectangular courtyard 3.78 metres long
and 5.25 metres wide is to be paved
exactly with square tiles, all of the same
size. what is the largest size of the tile
which could be used for the purpose ?
(a) 14 cm (b) 21 cm
(c) 42 cm (d) none of these

Plz help plz give me the answer

What is the value of the expression 9+n/3-6 when n = 12? 1. 5. 7. 12.

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