Question

The earth is 4,540,000,000 years old.
If this number is written in scientific notation, what is the value of the exponent on 10?

Answer 1

For 10 exponent it how much u move the decimal so its 4,500,000,000. To make it has to be more 0 less than 10 so the answer is 9. The total answer is 4.5x10^9 power