Question

I need help with a question

Answer 1

`\text{0.001 (option A)}`Step-by-step explanation:
`(4*10^(-6))/(4*10^(-3))`
`\begin{gathered} (4)/(4)*(10^(-6))/(10^(-3))\text{ = 1 }*(10^(-6))/(10^(-3))\text{ } \\ \text{The base of the numerator and denominator is the same.} \\ We\text{ would bring the exponents together} \end{gathered}`
`\begin{gathered} \text{The division betw}en\text{ thenm becomes minus when the exponents are brought together} \\ (10^(-6))/(10^(-3))\text{ =}10^(-6-(-3)) \\ \text{multiplication of same sign gives positive sign} \\ \text{ =}10^(-6-(-3))\text{ = =}10^(-6+3) \\ =10^(-3) \\ =\text{ 1}*10^(-3) \end{gathered}`
`\begin{gathered} 10^(-3)=\text{ }(1)/(1000) \\ 1*10^{-3\text{ }}\text{ =1}*(1)/(1000) \\ =(1)/(1000)\text{ } \\ \text{= 0.001 (option A)} \end{gathered}`