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Chapter 5: Q. 71 (page 611)
In the following exercises, solve the systems of equations by substitution.
The solution set is .
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In the following exercises, translate to a system of equations and solve.
College roommates John and David were driving home to the same town for the holidays. John drove 55 mph, and David, who left an hour later, drove 60 mph. How long will it take for David to catch up to John?
In the following exercises, translate to a system of equations and solve.
Nancy bought seven pounds of oranges and three pounds of bananas for \(17. Her husband later bought three pounds of oranges and six pounds of bananas for \)12. What was the cost per pound of the oranges and the bananas?
In the following exercises, solve the systems of equations by substitution.
In the following exercises, translate to a system of equations and solve.
Two angles are supplementary. The measure of the larger angle is five less than four times the measure of the smaller angle. Find the measures of both angles.
In the following exercises, solve the following systems of equations by graphing.
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