Concept explainers
a.
To write and graph an equation relating their travel time to their average rate of speed.
a.
Answer to Problem 45PPS
The required equation is
Explanation of Solution
Given information:
The distance to be travelled is 800 miles away, and time taken is inversely proportional to the average speed.
Consider r be the average speed and t be the travel time.
The required equation is
The graph of the equation is
b.
To calculate the minimum average speed required to reach the within 18 hours.
b.
Answer to Problem 45PPS
The average minimum speed required achieve the goal within 18 hours is
Explanation of Solution
Given information:
The distance to be travelled is 800 miles away, and time taken is inversely proportional to the average speed. Time limit to reach the goal is 8 hours.
Formula used:
Calculation:
To calculate the average minimum speed substitute the value of time.
Therefore,
The average minimum speed required achieve the goal within 18 hours is
Chapter 9 Solutions
Algebra 2
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