Answer:
Population in 2013 is 132.76 ≈ 133 million.
Step-by-step explanation:
A country's population in 1990 was 123 million
In 2002 it was 128 million.
We have to calculate the population in 2013.
Since population growth is always represented by exponential function.
It is represented by
Here t is time in years, k is the growth constant, and is initial population.
For year 1990 ⇒
128 = =
taking ln on both the sides ⇒
ln
ln 128 - ln 123 = 12k [since ln e = 1 ]
4.852 - 4.81218 = 12 k
k =
For year 2013 ⇒
= 123 ×
= 123 × 1.07937
= 132.76 rounded to 133 million.
Therefore, population in 2013 is 132.76 ≈ 133 million.
Answer:
12
Step-by-step explanation:
The greatest common divisor(gcd) is also known by the name highest common factor(hcf), greatest common factor(gcf).
Greatest common factor of two number can be defined as the highest integer that divides both the number.
We have to find greatest common divisor of 252 and 60.
The prime factorization of 252 is:
252 = 2×2×3×3×7
The prime factorization of 60 is:.
60 = 2×2×3×5
Common factors are: 2×2×3
Hence, greatest common divisor of 252 and 60 = 2×2×3 = 12
^^ .............................
28.2/9.4= 3
g=3
Just divide like normal.
Factor by grouping, -x2y2+9y2= y2(-x2+9)
x4-9x2=- x2(-x2+9)
= (y2-x2)(-x2+9)