The length of a rectangle is 4 times its width.
The perimeter is 36.
Find the length and width of the rectangle.
Answer
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carlislec21 7 months ago
Светило науки - 2 ответа - 0 помощи

Answer:

Length=14.4

Width=3.6

Step-by-step explanation:

l=4w

2l+2w=36

2(4w)+2w=36

8w+2w=36

10w=36

w=3.6

l=4w

4(3.6)

l=14.4

*check by plugging in answers into 2l+2w=36*

Answer
5 (2 оценки)
1
nfeinglass910 7 months ago
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Answer:

     or 14.4

    or 3.6

Step-by-step explanation:

Please take note this probably not the easiest way to do the problem.

Formula for the Perimeter of Rectangle

We are given the perimter.

To solve I would use the Gauss-Jordan method. (it is advanced, but it makes sense to me)

Write the coefficients of each eqaution as rows in the matrix.

Divide the first row by 2.

Multiply row 1 by -1 and add it to row 2.

Divide the second row by -5.

Multiply row 2 by -1 and add it to row 1.

We now have an augmented matrix.

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