Question

Which of the following options have the same value as %20, percent of 454545?
Choose 3 answers:

A
\dfrac{20}{45}\cdot 100
45
20
​
⋅100start fraction, 20, divided by, 45, end fraction, dot, 100

(Choice B)
B
\dfrac{1}{5}\cdot 45
5
1
​
⋅45start fraction, 1, divided by, 5, end fraction, dot, 45

(Choice C)
C
20\cdot 4520⋅4520, dot, 45

(Choice D)
D
\dfrac{20}{100}\cdot 45
100
20
​
⋅45start fraction, 20, divided by, 100, end fraction, dot, 45

(Choice E)
E
0.2\cdot 450.2⋅450, point, 2, dot, 45

Answer 1

(iv) Discuss the role of any two factors influencing population change.

Ans Two factors influencing the change in population are birth rate and death rate. Birth rate is

the number of births per 1,000 people and death rate is the number of deaths per 1,000 people.

Births and deaths are the natural causes of population change. When the birth rate is more than

the death rate, it means that the population is increasing and vice-versa. The difference between

the birth rate and the death rate of a country is called the natural growth rate.

Answer 2

Answer:

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