Question

Determine o valor de x
3 . 10^x = 90/0,3

Answer 1

$\Large\boxed{\begin{array}{l}\sf3\cdot10^x=\dfrac{90}{0,3}\\\sf 3\cdot10^x=300\\\sf 10^x=\dfrac{300}{3}\\\sf 10^x=100\\\sf 10^x=10^2\\\sf x=2\end{array}}$

Answer 2

Oie, tudo bom?

$3 \: . \: 10 {}^{x} = \frac{90}{0,3}$

$3 \: . \: 10 {}^{x} = 300$

$10 {}^{x} = \frac{300}{3}$

$10 {}^{x} = 100$

$10 {}^{x} = 10 {}^{2}$

Bases iguais, iguale os expoentes.

$\boxed{x = 2}$

Att. NLE Top Shotta