Question

Mars is about 142 million miles from the sun. The earth is about 93,000,000 miles from the sun. How much farther from the sun is Mars than the earth? Express the answer in scientific notation State the letter of the correct answer. A.) 235x10 B.) 2.35x107 C) 4.9x10 D.) 49x107

Answer 1

D)

1) Let's visualize it to better understand this

2) Let's pick the distance between Mars and the Sun, and subtract it by the distance (Earth-Sun):

`142,000,000-93,000,000=49,000,000=49\cdot10^6\text{ or 4.9 }\cdot10^7`

3) So Mars is 4.9 x 10^7 miles farther from the sun than the Earth.