Answer:
20,000
Step-by-step explanation:
[tex]\text{How many times greater is}\ 2.3\times10^{-4}\ \text{then}\ 1.15\times10^{-8}?[/tex]
[tex]\text{Divide}\ 2.3\times10^{-4}\ \text{by}\ 1.15\times10^{-8}:[/tex]
[tex]\dfrac{2.3\times10^{-4}}{1.15\times10^{-8}}=\dfrac{2.3}{1.15}\times10^{-4-(-8)}=2\times10^4=2\times10,000=20,000[/tex]
[tex]\text{Used:}\\\\\dfrac{a^n}{a^m}=a^{n-m}[/tex]
