The average distance from Earth to Mars is 2.25×10^8
km, and the distance from Earth to Neptune is 4.3514×10^9
km. How much farther is Neptune from Earth than Mars? Express your answer in scientific notation. Do not round your answer.(1 point)
Distance from Earth to Mars: 2.25×10^8 km
Distance from Earth to Neptune: 4.3514×10^9 km
To calculate how much farther Neptune is from Earth than Mars, we need to subtract the distance to Mars from the distance to Neptune.
Distance from Earth to Neptune - Distance from Earth to Mars = (4.3514×10^9 km) - (2.25×10^8 km)
To subtract the distances in scientific notation, we need to have the same power of 10. In this case, we can express the distance to Mars in scientific notation with the same power of 10 as Neptune:
Distance from Earth to Mars = 2.25×10^8 km
= 2.25×10^8 km × 10^1
= 2.25×10^(8+1)
= 2.25×10^9 km
Now we can subtract the distances:
(4.3514×10^9 km) - (2.25×10^9 km)
= (4.3514 - 2.25) × 10^9 km
= 2.1014 × 10^9 km
So, Neptune is 2.1014×10^9 km farther from Earth than Mars.