Answer:
100 residents/
Step-by-step explanation:
In order to find the population density, we have to calculate the area of the township first.
We know that:
L = length = 5 km
W = width = 4 km
So the area of the township is
Now we can find the population density by using
where N is the number of residents, and A is the area.
Substituting N = 2000, we find:
so, 100 residents per kilometer squared.
I think its D: Having a master’s degree and getting a doctorate degree
Answer:
The amount after 1 year is $ 1060 .
Step-by-step explanation:
The amount after 1 year on $1,000 invested at 6% per year on simple interest
is given by,
$
= $ (1000 + 60)
= $ 1060
We know that, if,
Principal = P unit
Rate of annual simple interest = R%
Time = T year
then, amount, A = unit
Answer:
666
Step-by-step explanation:
From this question,
a = 1-99%
a = 1-0.99
a = 0.01
5% = z(0.05) = 2.58 when we check the standard normal table
Therefore we calculate n as:
n = (z/E)²*p*1-p
Z = 2.58
E = 0.05
P = 0.5
1-p = 0.5
(2.58/0.05)²x0.5x0.5
= 51.6²x0.5x0.5
= 665.64
Therefore n is approximately 666.