Algebra 1: Common Core (15th Edition)

The answer is $10^{-1}$
To write $\frac{1}{10}$ in the form with the power of 10 and the negative exponent, we can change the equation and bring the 10 to the numerator, and since 10 has an exponent of 1 as $10^{1}$=10, the exponent changes from positive 1 to negative 1. $\frac{1}{10}$ = $10^{-1}$