Concept explainers
To find: The width of the frame.
Answer to Problem 8P
The width of the frame is 3.36 m.
Explanation of Solution
Given:
The length of the photograph 7 in.
The width of the photograph 5 in.
The area of photograph and the frame are equal.
Calculation:
Consider the constant width of the frame is x .
The total area of the photograph and the frame is
The solution of the given equation is obtained by using the quadratic formula.
For a
Comparing the given equation with the standard quadratic equation, the coefficients are:
Substituting these in the formula for the roots.
First take the positive sign.
The width cannot be negative.
The width of the frame is 2.426 m.
Therefore, the width of the frame is 2.426 m.
Chapter 7 Solutions
Algebra and Trigonometry: Structure and Method, Book 2
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