pply the Property of Negative Integer Exponents to rewrite 5^-9/4^-12 as an expression with positive exponents only.
To apply the property of negative integer exponents, we can rewrite 5^-9 as (1/5^9) and 4^-12 as (1/4^12).
Therefore, 5^-9/4^-12 can be rewritten as (1/5^9)/(1/4^12).
Using the quotient rule of exponents, this can be further simplified to (4^12)/(5^9).
Therefore, 5^-9/4^-12 can be rewritten as (4^12)/(5^9) with positive exponents only.