Devon checked a web site that gave daily updates on distances from Earth. He found that Pluto was 31.514 astronomical units (AU) from Earth. One AU = 149,600,000 kilometers. How many kilometers is Pluto from Earth expressed in scientific notation? Round the mantissa to the nearest thousandth.

Question

Leo Mitchell

Mathematics

6 May, 13:23

Devon checked a web site that gave daily updates on distances from Earth. He found that Pluto was 31.514 astronomical units (AU) from Earth. One AU = 149,600,000 kilometers. How many kilometers is Pluto from Earth expressed in scientific notation? Round the mantissa to the nearest thousandth.

+5

Answers (2)

Know the Answer?

Jolie Dominguez · Answer 1

C. 4.714*10^9

Step-by-step explanation:

Multiply 31.514*14900000

the answer will be 4714494400

In all of the answers it shows 4.714. notice how the decimal is in between 4 and 7. count the numbers and stop once you're at 7. there are 9 numbers. so it will be 4714494400 to the 9th power. which is 4.714*10^9.

Mathew Kennedy · Answer 2

The answer is C