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Mordred809
10.03.2020 •
Mathematics
A rectangular picture measuring 5 in. by 7 in. is surrounding by a frame with uniform width x. Write a quadratic function in standard form to show the combined area of the picture and frame.
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Ответ:
(4x² + 24x + 35) in²
Step-by-step explanation:
(5+2x)(7+2x)
35 + 14x + 10x + 4x²
4x² + 24x + 35
Ответ:
A(x) = 4x² + 24x + 35
Step-by-step explanation:
Let x represent the width of the rectangular frame.
The formula for determining the area of a rectangle is expressed as
Area = length × width
The measurement of the rectangular picture is 5 in. by 7 in.
If the width is 5 inches, then the combined width of the picture and frame is 5 + x + x = (5 + 2x) inches
The combined length would be
7 + x + x = (7 + 2x) inches
Therefore, a quadratic function in standard form to show the combined area of the picture and frame would be
(5 + 2x)(7 + 2x)
35 + 10x + 14x + 4x²
A(x) = 4x² + 24x + 35
Ответ: