Answer:
1 / 243
Explanation:
To write 3^-5 using a positive exponent, we can use the rule that a negative exponent is equivalent to the reciprocal of the same quantity raised to the positive exponent. In other words:
a^(-n) = 1 / a^n
Applying this rule to 3^-5, we get:
3^-5 = 1 / 3^5
Now we can simplify 3^5 as:
3^5 = 3 x 3 x 3 x 3 x 3 = 243
So, the answer is 1 / 243