Concept explainers
(a)
To plot:Scatter plot of male population and female population with year.
(a)
Explanation of Solution
Given information:
Table of population:
Calculation:
Graph of the population and year:
Conclusion:
Both graphs are straight line.
(b)
To find:The equations of trend lines.
(b)
Answer to Problem 20PPE
The equation of population
Explanation of Solution
Given information:
Graph of equations.
Formula used:
Slope intercept form:
Calculation:
The equation of population:
Conclusion:
The equation of population is
(c)
To find:The female population when male population is 150,000,000.
(c)
Answer to Problem 20PPE
The population of female is 135,019,000.
Explanation of Solution
Given information:
The equation of population is
Calculation:
The population of female is:
Year when male population is 150,000,000.
Conclusion:
The population of female is 135,019,000.
(d)
To plot:Scatter plot of male population v/s year.
(d)
Answer to Problem 20PPE
As the line of fit is nearer to the original values it is reasonable to predict population of 2035 male population.
Explanation of Solution
Given information:
Data for the male population v/s year.
Formula used:
Slope intercept form:
Calculation:
As the line of fit is nearer to the original values it is reasonable to predict population of 2035 male population.
Conclusion:
As the line of fit is nearer to the original values it is reasonable to predict population of 2035 male population.
Chapter 5 Solutions
High School Math 2015 Common Core Algebra 1 Student Edition Grade 8/9
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