Question

The population of Oklahoma City was approximately 560,000 in 2009. The population of Oklahoma City was approximately 445,000 in 1990. What is the difference between the approximated populations of Oklahoma City?

Answer 1

A.
`1.15*10^5`

Explanation:

Please consider the complete question.

The population of Oklahoma City was approximately 560,000 in 2009. The population of Oklahoma City was approximately 445,000 in 1990. What is the difference between the approximated populations of Oklahoma City?

A.
`1.15*10^5` B.
`2.493* 10^(12)`

C.
`1.005* 10^6` D.
`1.15* 10^6`

First of all we will find difference between populations and then convert our answer into scientific notation.

`\text{Population difference}= 560,000-445,000`

`\text{Population difference}=115,000`

To convert a number into scientific notation, we write the given number as product of two numbers. One factor is a number between 1 and 10, while the 2nd factor is power of 10.

Our 1st factor would be 1.15.

Let us convert 115,000 into scientific notation.

`115000=1.15*10^5`

Therefore, option A is the correct choice.