Answer:
option C
Step-by-step explanation:
Evaluate 0.00008 ÷ 640,000,000.
0.00008 can be written in standard notation
Move the decimal point to the end
so it becomes [tex]8 \cdot 10^{-5}[/tex]
for 640,000,000 , remove all the zeros and write it in standard form
[tex]64 \cdot 10^7[/tex]
Now we divide both
[tex]\frac{8 \cdot 10^{-5}}{64 \cdot 10^7}[/tex]
Apply exponential property
a^m divide by a^n is a^ m-n
[tex]\frac{8}{64} =0.125[/tex]
[tex]\frac{10^{-5}}{10^7}=10^{-12}[/tex]
[tex]0.125 \cdot 10^{-12}= 1.25 \cdot 10^{-13}[/tex]
