SOLUTION: Prove that it is rational or not. 1. 320.5492492492.... 2. 52.4672167216721..... Step by step

Question 860313: Prove that it is rational or not.
1. 320.5492492492....
2. 52.4672167216721.....
Step by step
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Prove that it is rational or not.
1. 320.5492492492....
n = 320.5492492492....
492 is repeated
---
n = 0.492
1000n = 492.492492...
+1 n = 0.492492492...
-------------------------- Subtract
999n = 492
n = 492/999
320.5492492492.... = 320.5 + 492/9990
--> rational
-----------
2. 52.4672167216721.....
Do it like #1
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