Answer:
4,000
Step-by-step explanation:
equation:
let x be the missing number
[tex]\frac{0.9}{100x}[/tex] =36
0.009x = 36
divide both sides by 0.009:
[tex]\frac{0.009x}{0.009} = \frac{36}{0.009}[/tex]
x = 4000
