SOLUTION: the length of a rectangle is (x + 4) centimeters and the width of the rectangle s (3x + 9) centimeters. Find the length of the rectangle if the perimeter of this rectangle is 136 c
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Question 858144: the length of a rectangle is (x + 4) centimeters and the width of the rectangle s (3x + 9) centimeters. Find the length of the rectangle if the perimeter of this rectangle is 136 centimeters.
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
the length of a rectangle is (x + 4) centimeters and the width of the rectangle s (3x + 9) centimeters. Find the length of the rectangle if the perimeter of this rectangle is 136 centimeters.
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twice the length+twice the width=perimeter
2(x+4)+2(3x+9)=136
2x+8+6x+18=136
8x=110
x=13.75
length=13.75+4=17.75 cm
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