the average distance from Earth to Mars is 2.25 x 10^8 km and the distance from Earth to Neptune is 4.3514 * 10 ^ 9 km how much further is Neptune from Earth than Mars express your answer in scientific notation

1 answer

To find the difference between the distances from Earth to Neptune and Mars, we subtract the distance from Mars from the distance from Neptune:

(4.3514 * 10^9 km) - (2.25 * 10^8 km)

To subtract the numbers in scientific notation, we should have the same exponent. So, we need to convert the distance from Mars into scientific notation:

2.25 * 10^8 km = 0.225 * 10^9 km

Now, we can subtract:

(4.3514 * 10^9 km) - (0.225 * 10^9 km) = (4.3514 - 0.225) * 10^9 km

Simplifying the subtraction:

4.1264 * 10^9 km

Therefore, Neptune is approximately 4.1264 * 10^9 km further from Earth than Mars.