Concept explainers
a.
To write: The equation that represents the area of the pen.
Given: A farmer is building a rectangular pen along the side of a barn for animals. The barn will serve as one side of the pen. The farmer has 120 feet of fence to enclose an area of 1512 square feet and wants to each side of the pen to be at least 20 feet long.
Explanation:
Let one side be x feet and another side 120- 2x.
Let the length of pen
Let the width of pen
Area of pen,
b.
To solve: The equation that represents the area of the pen and find the dimension of pen.
42 feet by 36 feet
Given: A farmer is building a rectangular pen along the side of a barn for animals. The barn will serve as one side of the pen. The farmer has 120 feet of fence to enclose an area of 1512 square feet and wants to each side of the pen to be at least 20 feet long.
Explanation:
Let one side be x feet and another side 120- 2x.
Let the length of pen
Let the width of pen
Area of pen,
Area of pen
But the side of pen at least 20 feet long.
So, ignore the value 18.
Dimension of pen 42 feet by 36 feet.
Chapter 3 Solutions
BIG IDEAS MATH Algebra 2: Common Core Student Edition 2015
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