madelynmorgan191 madelynmorgan191

02-06-2017
Mathematics

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If you have a rectangle with an area of 100 m and the length is 4 more than 2 times the width what are the dimensions

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ghanami ghanami

02-06-2017

hello :
x is the width
y is the length
xy = 100 ...(1)
y = 4x ...(2)
subsct in (1) : x(4x) = 100
x² = 5²
x= 5
y = 20

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