SOLUTION: 1 2 3 4 5 N 5 9 13 17 21 __ What is the missing value? I believe the answer is N + 19.

Algebra ->  Number-Line -> SOLUTION: 1 2 3 4 5 N 5 9 13 17 21 __ What is the missing value? I believe the answer is N + 19.      Log On


   

Question 508724: 1 2 3 4 5 N
5 9 13 17 21 __ What is the missing value?
I believe the answer is N + 19.
Answer by jerryguo41(197) About Me  (Show Source):
You can put this solution on YOUR website!
so for these problems I personally like to represent X as the input and Y as output so
2x+1=y is your pattern
Plug 21 in
2x+1=21
minus one on both sides
2x=20
divide
x=10
So your missing N = 10