Question

how do you write 39,000 in scientific notation?
× 10

Explanation:

Step1: Rewrite as a number between 1 - 10

Move the decimal point in 39000 to the left until we get a number between 1 and 10. So, 39000 becomes 3.9.

Step2: Determine the exponent of 10

We moved the decimal point 4 places to the left. So the exponent of 10 is 4.

Answer:

$3.9\times 10^{4}$