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Math Question, Please Help, Show Work?
The length of a rectangle mailing label is three cm less than twice the width. The perimeter is 54cm. Find the dimensions of the label.
2 Answers
- 1 decade agoFavorite Answer
perimeter is total of all 4 sides and the equation states length and width are 2x-3(length) and x(width). Since the are 4 side to a rectangle, not 2 we multiply each by 2 to get 4x-6(lengths) and 2x(widths). This gives us the equation:
2x + 4x - 6 = 54, then combine x's
6x - 6 = 54, then add 6
6x = 60, then divide by 6
x = 10
now that we have width(x) we can get length(2x-3)
to get width is 10 and length is 17
so now add all 4 sides to confirm: 17+17+10+10=54
