articles the, a

[tessandre]

I am getting confuse using these articles the, a

Enclosed is (the, a )check for fourteen thousand four hundred twenty five dollars for asset management fee.

When to use the, a

Thanks again guys!!!

[Natalka]

Hi! You can read about articles here http://grammar.ccc.commnet.edu/grammar/determiners/determiners.htm

[Lucretia]

Hello,

I'd use a:
Enclosed is a check for fourteen thousand four hundred twenty-five dollars for asset management fee.
The check is mentioned for the first time.

Best wishes.