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Grade of a Road. Refer to the illustration below. Find the slope of the decline and use that information to find the grade of the road.(IMAGE CANNOT COPY)
$\frac{1}{20} ; 5 \%$
Algebra
Chapter 3
Graphing Linear Equations and Inequalities in Two Variables; Functions
Section 4
Slope and Rate of Change
Graphs and Statistics
Equations and Inequalities
Linear Functions
Systems of Equations and Inequalities
Missouri State University
McMaster University
Baylor University
Lectures
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in this problem, we're going to find the grade of the road. So the road is the black segment and the great is the slope converted to a percent. So to find the slope we confined the rise over run the rises to 64 feet over the run, 5280 feet. That's the distance of one mile, and then when we divide, we get 0.5 So the slope is 0.5 and then we convert that to a percent by multiplying it by 100 it's a 5% grade.
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