Answer:
1/2 = 2^-1 = 1/2
Explanation:
The picture shows you that you find the number at 11:00 a.m. by dividing 1 by 2. That division is represented as ...
![1/2=\boxed{(1)/(2)}=\boxed{2^(-1)}=\boxed{1/2}](https://img.qammunity.org/2021/formulas/mathematics/high-school/3rw0l3jwbjam8f5ziv4qny59hbed26kthk.png)
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Additional comment
It is somewhat difficult to tell exactly what "expanded form" is required for the fraction. We have taken a clue from the form used for positive exponents where the multiplication by 2 is shown. So, for negative exponents, we have shown the division by 2.
The 10 a.m. form might then be 1/4 = 2^-2 = 1/2/2.