evaluate.\n$10^{-7}$

Explanation:

Step1: Apply negative exponent rule

A negative exponent means the reciprocal of the positive exponent: $a^{-n} = \frac{1}{a^n}$ So, $10^{-7} = \frac{1}{10^7}$

Step2: Calculate positive exponent value

$10^7 = 10000000$ Thus, $\frac{1}{10^7} = \frac{1}{10000000}$

Step3: Convert to decimal form

$\frac{1}{10000000} = 0.0000001$

Answer:

$\frac{1}{10000000}$ or $0.0000001$