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potaetoo1997
23.01.2020 •
Mathematics
The width of a rectangle is 6 t minus 4.5 feet and the length is 4.5 t plus 9 feet. find the perimeter of the rectangle. plzz & thxs : )
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Ответ:
The perimeter of the rectangle can be represented as:
⇒![(21t+27)\ ft](/tpl/images/0466/7647/13fff.png)
Step-by-step explanation:
Given :
Width of the rectangle =![(6t-4.5)\ ft](/tpl/images/0466/7647/f3412.png)
Length of the rectangle =![(4.5t+9)\ ft](/tpl/images/0466/7647/72b21.png)
To find the perimeter of the rectangle.
Solution:
The perimeter of a rectangle is given as :
⇒![2(l+w)](/tpl/images/0466/7647/47f7f.png)
where
represents length of the rectangle and
represents the width of the rectangle.
Plugging in the given data of length and width to find the perimeter of the rectangle.
⇒![2(6t+4.5+4.5t+9)](/tpl/images/0466/7647/63c60.png)
Adding like terms.
⇒![2(6t+4.5t+4.5+9)](/tpl/images/0466/7647/85f64.png)
⇒![2(10.5t+13.5)](/tpl/images/0466/7647/680c4.png)
Using distribution
⇒![(21t+27)\ ft](/tpl/images/0466/7647/13fff.png)
Thus, perimeter of the rectangle can be represented as:
⇒
(Answer)
Ответ:
The correct answer is Step 2. Mariah didn't need to multiply 1 over 4 in the first step.
(Hope this kinda helps) Sky