To find the difference in distance between Earth and Neptune and Earth and Mars, we subtract the distance to Mars from the distance to Neptune:
4.3514×10^9 km - 2.25×10^8 km.
To subtract these numbers, we need to ensure that they have the same base. We can convert 2.25×10^8 km to scientific notation by representing it as 2.25×10^8 km + 0×10^8 km.
So, now the two numbers have the same base:
4.3514×10^9 km - 2.25×10^8 km = 4.3514×10^9 km + 0×10^8 km - 2.25×10^8 km.
Now, we can simply subtract the coefficients:
4.3514 - 2.25 = 2.1014.
Therefore, Neptune is 2.1014×10^9 km farther from Earth than Mars.
The average distance from Earth to Mars is 2.25×108 km, and the distance from Earth to Neptune is 4.3514×109 km. How much farther is Neptune from Earth than Mars? Express your answer in scientific notation. Do not round your answer.(1 point)
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