Answer:
The equation to determine the length is [tex]4w+2w=48[/tex].
The Length of the exercise mat is 16 feet.
Step-by-step explanation:
Given:
Perimeter of Rectangular mat = [tex]48\ ft[/tex]
Let the length of the mat be denoted by 'l'
And width be denoted by 'w'.
Also Given:
The length of the mat is twice the width of the mat.
So we can say that;
[tex]l=2w[/tex] ⇒ equation 1
Now we know that;
Perimeter of Rectangle is equal to twice the sum of length and width.
framing in equation form we get;
[tex]2(l+w)=48[/tex] ⇒ equation 2
Now Substituting equation 1 in equation 2 we get;
[tex]2(2w+w)=48[/tex]
Applying Distributive property we get;
[tex]2\times2w+2\times w=48\\\\4w+2w=48[/tex]
Hence, The equation to determine the length is [tex]4w+2w=48[/tex].
On Solving the above equation we get;
[tex]4w+2w=48\\\\6w=48[/tex]
Dividing both side by 6 we get;
[tex]\frac{6w}{6}=\frac{48}{6}\\\\w=8\ ft[/tex]
Now Substituting the value of 'w' in equation 1 we get;
[tex]l=2w=2\times8=16\ ft[/tex]
Hence The Length of the exercise mat is 16 feet.