To answer this question, we need to have the conversion factor for miles to kilometers as follows:
[tex]1\text{mile}\approx1.61km[/tex]Now, if we have 8 miles, we can proceed as follows:
[tex]8\text{miles}\cdot\frac{1.61\operatorname{km}}{1\text{mile}}=8\cdot\frac{mile}{mile}\cdot1.61\operatorname{km}[/tex]Therefore, we have:
[tex]8\cdot1.61\operatorname{km}=12.88\operatorname{km}[/tex]If we round this result to the nearest tenth, we finally have that the final answer is 12.9km.
We know that:
[tex]1\operatorname{km}\approx0.62miles[/tex]Therefore, if we have 1.5 km, we can proceed as follows:
[tex]\begin{gathered} 1.5\operatorname{km}\cdot\frac{0.62\text{miles}}{1\operatorname{km}}=1.5\cdot\frac{\operatorname{km}}{\operatorname{km}}\cdot0.62\text{miles} \\ 1.5\cdot0.62\text{miles}=0.93\text{miles} \end{gathered}[/tex]If we round the result to the nearest tenth, we have that 1.5 kilometers are approximately 0.9 miles.
We can proceed similarly:
[tex]\begin{gathered} 9\operatorname{km}\cdot0.62\frac{miles}{\operatorname{km}} \\ 9\cdot0.62\cdot\frac{\operatorname{km}}{\operatorname{km}}\cdot miles\Rightarrow\frac{km}{\operatorname{km}}=1 \\ 5.58\text{miles} \end{gathered}[/tex]If we round the result to the nearest tenth, we have that 9 kilometers are approximately 5.6 miles.
We can proceed as follows:
[tex]\begin{gathered} 3.1\text{miles}\cdot\frac{1.61\operatorname{km}}{1\text{mile}} \\ 3.1\cdot\frac{mile}{mile}\cdot1.61\operatorname{km} \\ 4.991\operatorname{km} \end{gathered}[/tex]If we round the result to the nearest tenth, we will end up with 5.0km.
In summary, we have that - rounded to the nearest tenth:
• 8miles is approximately 12.9km
,• 1.5km is approximately 0.9miles
,• 9km is approximately 5.6miles
,• 3.1miles is approximately 5.0km
