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.
The answer to this question is that this is a rhombus
Answer:
pls I don't get the question
The answer is 12 a this is how to solve it:
5a+3a+14+4(a-6)+10
5a+3a+14+4a-24+10
8a+14+4a-24+10
12a+14-24+10
12a-10+10
12a
Answer:
(a) Because the expression is not an equation
(b) Because the expression is an equation
Step-by-step explanation:
Solving (a): a + 2
The above expression can assume any value for a because it is not an equation.
Take for instance:
a = 2;
<em>The reason for this is because the expression is not an equation</em>
Solving (b):
The above expression can assume only value for b, and the value is:
This means that only will make the equation true.
<em>The reason for this is because the expression is an equation</em>