Question

10⁴ˣ=$\frac{1}{1000}$

Answer 1

$10^{4x} = \frac{1}{1000} \\ 10^{4x} = \frac{1}{10^3} \\ 10^{4x} = 10^{- 3}$

Bases igualadas, trabalhemos com os expoentes

$4x = - 3 \\ x = \frac{- 3}{4} = - \frac{3}{4}$