31-10-2016
Mathematics

contestada

The length of a rectangle is (12-4x) units. The perimeter of the rectangle is 42-8x+4y units. Part A Describe how you con find an expression for the width of the rectangle. Part B write a simplified expression to represent the width, in units, of the rectangle.

The length of a rectangle is 124x units The perimeter of the rectangle is 428x4y units Part A Describe how you con find an expression for the width of the recta class=

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minecraftexpert minecraftexpert

06-11-2016

42-8x+4y / 2 = 21-4x+2y
21-4x+2y is the sum of length and width. since length is 12-4x units, width is 9+2y because (21-4x+2y) - (12-4x) = 9+2y

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