STEP-BY-STEP EXPLANATION:
Given information
Mass to be converted = 7.07 mg
Let x represents the converted mass in kg
[tex]\begin{gathered} \text{ Recall that, 1 mg is equivalent to 10}^{-6}kg \\ \text{ Since x is the converted mass in kg} \\ \text{Then}, \\ 1\text{ mg }\rightarrow10^{-6}\operatorname{kg} \\ 7.07\text{ mg }\rightarrow\text{ xkg} \\ \text{Cross multiply} \\ 1\cdot\text{ x = 7.07 }\cdot10^{-6} \\ x\text{ = 7.07 }\cdot10^{-6}\text{ }kg \end{gathered}[/tex]Therefore, 7.07 mg is 7.07 x 10^-6 kg
