answersLogoWhite

0


Best Answer

Rational

5.121212 = 5 121212/1000000 As a rational fraction .

However, if you mean 5.121212.... (recuring to infinity_

Then

Let P = 5.121212....

&

100P = 512.121212...

Subtract

99P = 507 (Note the recuring decimals subtract to zero)

P = 507/99

P = 5 12/99

P = 5 4/33 Which is also rational .

NB Terminating decimals do NOT have a series of stops.

Recuring to infinity decimals have three or more dots/stops after the last decimal digit.

User Avatar

lenpollock

Lvl 16
6mo ago
This answer is:
User Avatar
More answers
User Avatar

Wiki User

13y ago

Rational.

This answer is:
User Avatar

User Avatar

Anonymous

Lvl 1
4y ago

Rational

This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: Is 5.121212 rational or irrational
Write your answer...
Submit
Still have questions?
magnify glass
imp