The answer is the first one.
Knowing that population density is like a rate, people per a given area, you would take the amount of people and divide by the area.
3.11E7/7.69E6 = 4.02 people per km squared.
Also the “E” is another way to write times 10 to a power and I recommend using that notation when plugging it into a calculator.
That's a huge one. I don't think that anyone will actually answer that.
Answer: the 1st one.
Step-by-step explanation: becuase today I was helping out a freind with this. So it the first one
Answer:
A and B
Step-by-step explanation:
1/4x^2 = (1/2x)^2
