Answer:
0.0000000999.
Step-by-step explanation:
[tex]9.99*10^{-8}[/tex] to find the answer we are going to convert the multiplication in a division. So, let's change the negative exponent to positive:
[tex]9.99*10^{-8}= 9.99\frac{1}{10^8}= \frac{9.99}{10^8}.[/tex]
As we have a division by a power of ten, we only need to run the dot eight spaces to the left (the number of spaces is the exponent of 10), the empty spaces are filled with 0. Then,
[tex]\frac{9.99}{10^8}= 0.0000000999.[/tex]
