Question

Social Studies The population of the world in the year 1 A.D. has been estimated at about 200,000,000. By 1850 , this number had grown to about 1 billion, and by $2000,$ the population was close to $6 \times 10^{9} .$ a. The 1850 population was how many times the population in 1 A.D.? b. The 2000 population was how many times the 1850 population? c. Over which time period did the world population grow more: the 1,850 years from 1 A.D. to 1850, or the 150 years from 1850 to 2000?

Name: Problem 44, Chapter 3: Impact Mathematics Algebra and More
Uploaded: 2020-07-02T21:06:13-08:00
Duration: 1 min 46 s
Channel: Amy Jiang

   Social Studies The population of the world in the year 1 A.D. has been estimated at about 200,000,000. By 1850 , this number had grown to about 1 billion, and by $2000,$ the population was close to $6 \times 10^{9} .$
a. The 1850 population was how many times the population in 1 A.D.?
b. The 2000 population was how many times the 1850 population?
c. Over which time period did the world population grow more: the 1,850 years from 1 A.D. to 1850, or the 150 years from 1850 to 2000?

Impact Mathematics Algebra and More

McGraw Hill 1st Edition

Chapter 3, Problem 44

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Solved by Expert Amy Jiang

07/02/2020

Step 1

D. To do this, we divide the population in 1850 by the population in 1 A.D. The population in 1850 was 1 billion, which is $1 \times 10^{9}$ in scientific notation. The population in 1 A.D. was 200 million, which is $2 \times 10^{8}$ in scientific notation. So, we Show more…

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Social Studies The population of the world in the year 1 A.D. has been estimated at about 200,000,000. By 1850 , this number had grown to about 1 billion, and by $2000,$ the population was close to $6 \times 10^{9} .$ a. The 1850 population was how many times the population in 1 A.D.? b. The 2000 population was how many times the 1850 population? c. Over which time period did the world population grow more: the 1,850 years from 1 A.D. to 1850, or the 150 years from 1850 to 2000?

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Key Concepts

Time Scale Comparison

This concept involves assessing changes over different time periods to understand the rate and magnitude of growth. It is important when comparing long-term, gradual increases versus shorter intervals of rapid change, providing insights into how quickly population dynamics can shift over time.

Population Growth

This concept refers to the increase in the number of individuals in a population over time due to factors such as birth rates, mortality rates, and migration patterns. Understanding population growth is crucial to analyzing historical and modern demographic changes and their implications on society and resources.

Ratios and Proportional Reasoning

This concept involves comparing two quantities by determining how many times one quantity contains another. It is essential for evaluating relative changes between different time periods, allowing us to quantify population increases as multiples of earlier values.

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