Given:
Speed of light = [tex]10^{-18}[/tex]
To find:
The number using a positive exponent.
Solution:
We have,
Speed of light = [tex]10^{-18}[/tex]
Using properties of exponents, it can be written as
Speed of light = [tex]\dfrac{1}{10^{18}}[/tex] [tex][\because a^{-n}=\dfrac{1}{a^n}][/tex]
Therefore, using a positive exponent the speed of light is about [tex]\dfrac{1}{10^{18}}[/tex].