Final answer:
To write 7-0 using a positive exponent, the answer is 70 = 1.
Step-by-step explanation:
To write 7-0 using a positive exponent, we need to recognize that any number raised to the power of 0 is equal to 1. Therefore, 7-0 can be written as 70 = 1.
Learn more about Positive exponents and the rule for exponents with zero