Answer:
1990 and 2010

Explanation:
Let:

We need to know, in what year(s) the villages had the same population, mathematically this is:

So:

Solving for x:
Factoring

Hence:

Therefore the year(s) which the village had the same population are:

In order to find the population of both cities during the year(s) of equal population, just evalue the equations at x=15 and x=35:

The person-centered approach suggests that personality is shaped by support and love regardless of behavior. Conversely, behaviorists think that personality is conditioned by rewards/punishments.
<h3>What is the person-centered approach?</h3>
The person-centered approach is a school of thinking where the individual is placed at the center and treated as a person at all.
The person-centered approach acts to empower people and thus reach a better quality of life.
Conversely, behaviorists are a school of thinking where personality shows to be conditioned by specific rewards and/or punishments.
Learn more about the person-centered approach here:
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The following are attributes of only a competitive market:
price taker
identical products
The following is not an attribute of either markets: few sellers
The following is an attribute of both markets: price is equal to marginal cost
<h3>What is a
competitive market?</h3>
A competitive market is characterized by many buyers and sellers of identical goods and services. Market prices are set by the forces of demand and supply. So, buyers and sellers are price takers There are no barriers to entry or exit of firms into the industry.
<h3>What is a monopolistically competitive market?</h3>
A monopolistic competition is when there are many firms selling differentiated products in an industry. The demand curve is downward sloping. it sets the price for its goods and services.
To learn more about monopolistic competition, please check: brainly.com/question/21052250
If several resistors are connected in series in an electric circuit, the potential difference across each resistor, the current, varies directly with its resistance.
<h3>What is a resistor?</h3>
A resistor is a used to control the flow of electricity in an electric circuit. They are made up of carbon or copper, which resist the flow of charge.
The total resistance across all the component, in a series circuit, increases with adding of more component.
Thus, If several resistors are connected in series in an electric circuit, the potential difference across each resistor, the current, varies directly with its resistance.
Learn more about resistor
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