Answer:
2 2/5
Step-by-step explanation:
Answer:
3 feet wide
Step-by-step explanation:
21/7= 3
Answer:
C
Step-by-step explanation:
You are choosing 3 from a total of 12. Order does not matter. So you are working with combinations. The answer symbolically is
12C3
12C3 = 12!/(9!3!)
12C3 = 12 * 11 * 10 * 9!/(9! 3!)
12C3 = 12 * 11 * 10/6
12C3 = 2 * 11 * 10
12C3 = 220
5 rows x 4 in each = 20 chairs in the classroom
Answer:
7 and 12
Step-by-step explanation: