Question

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. In scientific notation, how many miles away is it?

Answer 1

Answer:

8.4672 x 10^13

Step-by-step explanation:

Answer 2

         (14.4)  x  (5,880,000,000,000 miles)  =  84,672,000,000,000 miles

                     (14.4)  x  (5.88 x 10¹²)

                 =      84.672 x 10¹²

                 =      8.4672 x 10¹³ .