Answer:
Option B - ![=8.4672\times 10^{13}](https://tex.z-dn.net/?f=%3D8.4672%5Ctimes%2010%5E%7B13%7D)
Step-by-step explanation:
Given : Astronomers measure large distances in light-years. One light-year is the distance that light can travel in one year, or approximately 5,880,000,000,000 miles.Suppose a star is 14.4 light years from earth.
To find : In scientific notation, how many miles away a star is from earth?
Solution :
One light-year is the distance that light can travel in one year is = 5,880,000,000,000 miles.
In scientific notation,
miles.
In 14.4 lights year the distance is ![=14.4\times5.88\times 10^{12}](https://tex.z-dn.net/?f=%3D14.4%5Ctimes5.88%5Ctimes%2010%5E%7B12%7D)
In 14.4 lights year the distance is ![=84.672\times 10^{12}](https://tex.z-dn.net/?f=%3D84.672%5Ctimes%2010%5E%7B12%7D)
or ![=8.4672\times 10^{13}](https://tex.z-dn.net/?f=%3D8.4672%5Ctimes%2010%5E%7B13%7D)
Therefore, Option B is correct.