Question

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

Answer 1

Answer:

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

Step-by-step 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 $a\times 10^b$ where $1\le a$ 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

$=7.5000000\times 10^7$

Remove the trailing zeros

$=7.5\times \:10^7$

Therefore, we conclude that:

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