Answer:
Step-by-step explanation:
Center (0,0)
radius = √16 = 4
Answer: 32760 ways.
Step-by-step explanation:
To solve this, we first determine the number of ways to select 4 countries from 15, we calculate number of ways to visit these 4 places then we multiply.
Selecting number of ways to choose 4 cities from 15 is by using the combination formula, which becomes 15C4
Number of ways to visit these 4 cities = 4!
Hence,total number of ways of visiting these 4 cities = 15C4 * 4! = 32760ways
Answer:
Step-by-step explanation:
hello :
let four consecutive whole numbers : n , n+1 , n+2 , n+3
the sum is : n + n+1 + n+2 + n+3 =4n+6
you can write 4n+6 to the form : 2(2n+3) means 2k ( k=2n+3)
so even number
Answer:
c= 2, d=2
Step-by-step explanation: