Day 1: 64,000
Day 2: 32,000
Day 3: 16,000
Day 4: 8,000
Day 5: 4,000
As each day goes by, half of the population is gone.
To solve a quadratic equation
we can use the quadratic formula:

In your case, the equation is identified by 
So, the solving formula yields

So, the two solutions are derived by choosing the plus sign once, and the minus sign the other time:

You did not make clear the question, revise and I will help you!
Well to start off with, this is an intersecting angle. as you can see, on part is already at a 60 degree angle. each angle inside is an acute angle, but they are still equal to each other.
because of this, you have to look at the angle inside of this (the acute angle)
both X and Y would also be 60 degrees...
hope this helps!
Answer: 10?
Step-by-step explanation: Just divide 20/2 and you get the answer. Ight Ima head out