madelynmorgan191 madelynmorgan191
  • 02-06-2017
  • Mathematics
contestada

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 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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