Answer: The width is 12 feet shorter than the length.
Step-by-step explanation:
The area of a rectangle can be calculated with this formula:
![A=lw](https://tex.z-dn.net/?f=A%3Dlw)
Where "l" is the lenght and "w" is the width of the rectangle.
We know that lenght of Jennie's yard is 30 feet, the width is
and the area is 540 square feet. Then:
![l=30\\w=(30-x)\\A=540](https://tex.z-dn.net/?f=l%3D30%5C%5Cw%3D%2830-x%29%5C%5CA%3D540)
Substitute these values into the formula and then solve for "x":
![A=lw\\\\540=30(30-x)\\\\540=900-30x\\\\30x=900-540\\\\x=\frac{360}{30}\\\\x=12](https://tex.z-dn.net/?f=A%3Dlw%5C%5C%5C%5C540%3D30%2830-x%29%5C%5C%5C%5C540%3D900-30x%5C%5C%5C%5C30x%3D900-540%5C%5C%5C%5Cx%3D%5Cfrac%7B360%7D%7B30%7D%5C%5C%5C%5Cx%3D12)
Therefore, the width is 12 feet shorter than the length.
The only equation that is written in descending order is
2x³+4x²-7x+5 , Option D is the correct answer.
<h3>What is a Polynomial ?</h3>
A polynomial is a mathematical expression consisting of variables , constants and mathematical operators.
The standard form of a polynomial is
![\rm a_1x^n +a_2x^{n-1}+............+a_0](https://tex.z-dn.net/?f=%5Crm%20a_1x%5En%20%2Ba_2x%5E%7Bn-1%7D%2B............%2Ba_0)
The only equation that is in its standard form or in other words
The only equation that is written in descending order is
2x³+4x²-7x+5 , Option D is the correct answer.
To know more about Polynomial
brainly.com/question/11536910
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Answer: A
Step-by-step explanation:
They have one solution because as you look at the lines they have different slopes and different y intercepts which means it has one solution.It is not parallel to each other to have no solutions. They seems to be going to one direction and eventually they will intersect.
Answer: Area of the rectangular room = length x Breadth
Length= 18 and Breadth = 12
Therefore the Area required to cover the floor = 18 * 12 = 216 ft2