Apply the Property of Negative Integer Exponents to rewrite 9^-23 as an expression with positive exponents only.

9^-23 = __

1/9^23

To apply the property of negative integer exponents, we can rewrite 9^-23 as 1/9^23.

Therefore, 9^-23 = 1/9^23.

To rewrite 9^-23 as an expression with positive exponents only, we can apply the property of negative integer exponents, which states that a number raised to a negative exponent is equal to 1 divided by that number raised to the positive exponent.

In this case, we have 9^-23, so we can rewrite it as:

9^-23 = 1 / 9^23

Therefore, 9^-23 can be expressed as 1 divided by 9 raised to the positive exponent 23.