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bazaltina [42]
2 years ago
13

The length of a rectangular frame is represented by the expression 2x 4, and the width of the rectangular frame is represented b

y the expression 2x 10. write an equation to solve for the width of a rectangular frame that has a total area of 120 square inches. 2x2 20x − 80 = 0 4x2 28x 40 = 0 4x2 28x − 80 = 0 x2 8x 20 = 0
Mathematics
1 answer:
antoniya [11.8K]2 years ago
3 0

The equation that can be ued to solve for the width of the rectangular frame is 2x² + 14x - 40 = 0.

<h3>What is the equation that can be used to solve for the width?</h3>

A rectangle is a 2-dimensional quadrilateral with four right angles.

Area of a rectangle = length x width

(2x + 4) x (2x + 10) = 120

Expand the brackets

4x² + 20x + 8x + 40 = 120

Add similar terms

4x² +28x + 40 = 120

4x² +28x - 80 = 0

Divide through by 2

2x² + 14x - 40 = 0

To learn more about how to calculate the area of a rectangle, please check: brainly.com/question/16595449

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Answer:

$57

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Step-by-step explanation:

Given that:

Earnings per hour for washing cars = $9

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Earnings for w hours for washing cars = Per hour earnings multiplied by number of hours = $9w

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1. Each side of a square barn is 9 meters long.
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Answer:

The value of x is 8cm. The length of 3 sides are 8cm, 15cm and 17cm.

Step-by-step explanation:

Using Pythagoras' Theorem, a²+b² = c² :

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Let b be x+7 cm,

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