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KiRa [710]
3 years ago
11

The expression 3 1/2x + 18 represents the perimeter of the rectangle shown. Write an expression that represents the length of th

e rectangle.

Mathematics
1 answer:
I am Lyosha [343]3 years ago
7 0

Length of rectangle is: \frac{3x+8}{2}

Step-by-step explanation:

The Perimeter of rectangle = 3\frac{1}{2}x+18

The width of rectangle = \frac{1}{4}x+5

Length of rectangle = ?

The formula used to find Perimeter of rectangle is:

Perimeter=2(L+W)

Finding length:

Perimeter=2(L+W)\\3\frac{1}{2}x+18=2(L+(\frac{1}{4}x+5))\\\frac{7x+18*2}{2}=2(L+(\frac{1}{4}x+5))\\\frac{\frac{7x+36}{2}}{2} =(L+(\frac{1}{4}x+5))\\\frac{7x+36}{4} =(L+(\frac{1}{4}x+5))\\L=\frac{7x+36}{4}-\frac{1}{4}x-5\\L=\frac{7x+36-x-5*4}{4}\\ L=\frac{6x+36-20}{4}\\L=\frac{6x+16}{4}\\L=2(\frac{3x+8}{4})\\L=\frac{3x+8}{2}

So, Length of rectangle is: \frac{3x+8}{2}

Keywords: perimeter of the rectangle

Learn more about perimeter of the rectangle at:

  • brainly.com/question/8902155
  • brainly.com/question/6594923
  • brainly.com/question/12985572

#learnwithBrainly

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