Question

write in scientific notation quick check
what is the number 7.3×10⁻⁸ written in decimal notation? (1 point)
730,000,000
0.0000000073
0.00000007.3
0.000000073

Explanation:

Step1: Recall scientific - notation rule

When we have a number in scientific notation $a\times10^{-n}$ ($1\leq a<10$, $n$ is a positive integer), we move the decimal point $n$ places to the left.

Step2: Move the decimal point

For $7.3\times 10^{-8}$, we move the decimal point 8 places to the left. Starting with 7.3, we get 0.000000073.

Answer:

0.000000073