Question

In a recent year, the population of California was about 2.52 x 10^7 people. Its land area is about 4.05 x 10^5 km^2. What was the average number of people per square kilometer? Write your answer in scientific notation.

PLEASE I NEED HELP ASAP!!!!!!!!!!!!

Answer 1

The population of California =
`2.52 * 10^7` people.

Land area of California =
`4.05 * 10^5km^2`.

We have to determine the average number of people per square kilometer.

Average number of people per square kilometer =

Land area of California
`/` Population of California

=
`4.05 * 10^5 / 2.52 * 10^7`

=
`1.6 * 10^(-2)`

Therefore, the average number of people per square kilometer is
`1.6 * 10^(-2)`.

It is represented in scientific notation as Scientific notation is a way of writing very large or very small numbers. A number is written in scientific notation when a number between 1 and 10 is multiplied by a power of 10.