Once they're empty, I guess.
Did you put it the wrong way around?
Because it would be after four hours in this case.
Given:
The quadratic equation is :

To find:
The quadratic formula for the given equation after substituting the values.
Solution:
If a quadratic equation is
, then the quadratic formula is:

We have,

In this equation,
.
Substituting
in the above formula, we get

Therefore, the required quadratic formula for the given equation after substituting the values is
.
Do you need a explanation of your answer if not i do believe its B
Answer:
5 x 10-6
Step-by-step explanation:
Answer:
its the first one
Step-by-step explanation: