Question

Jean writes 75,000,000 in scientific notation as 75 . Explain whether she is correct or incorrect.​

Answer 1

As Jean writes 75,000,000 in scientific notation as 75.

This is INCORRECT!

The correct solution is:

75,000,000 in scientific notation: 7.5 × 10⁷

Explanation:

As Jean writes 75,000,000 in scientific notation as 75.

This is INCORRECT!

Here is the correct solution:

Given the number

75,000,000

Let us write the number 75000000 in scientific notation

We know that scientific notation is of the form
`a* 10^b` where
`1\le a<10` and b is an integer.

Move the decimal point to the left to create a new number from 1 up to 10.

`a=7.5000000`

Count the number of times you moved the decimal point

b = 7

so

`=7.5000000* 10^7`

Remove the trailing zeros

`=7.5* \:10^7`

Therefore, we conclude that:

75,000,000 in scientific notation: 7.5 × 10⁷