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erik [133]
3 years ago
14

A rectangular garden has a length that is modeled by the expression 2 x – 7 and a width of 3 x 2 + 4 x. Part A: What is the area

of the garden? Part B: The owner of the garden wants to put a fence around the perimeter of the garden. Write an expression for the amount of fencing that the owner will need and solve to find the perimeter
Mathematics
2 answers:
borishaifa [10]3 years ago
5 0
Area: (2x - 7) * (3*2 + 4x)
          (2x - 7) * (6 + 4x)
                  8x-42

Perimeter: 2(2x - 7) + 2(3*2 + 4x)
nekit [7.7K]3 years ago
3 0

Answer:

Area(A) and perimeter(P) of rectangle  is given by:

A = lw

P = 2(l+w)

where,

l is the length and w is the width of the rectangle.

As per the statement:

A rectangular garden has a length that is modeled by the expression:

l = 2x-7 and a width(w) = 3x^2+4x

A.

To find the area of the garden.

then;

A = (2x-7)(3x^2+4x) = 6x^3+8x^2-21x^2-28x

Combine like terms;

A = 6x^3-13x^2-28x square units.

Therefore, the area of the garden is, 6x^3-13x^2-28x square units.

B.

The owner of the garden wants to put a fence around the perimeter of the garden.

then;

P = 2(2x-7+3x^2+4x) = 2(3x^2+6x-7)=6x^2+12x-14

Therefore, the perimeter of the garden is, 6x^2+12x-14 units

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