karinagonzalez3 karinagonzalez3

26-10-2016
Mathematics

contestada

The perimeter of a rectangle is 50 cm and the length is 4 cm longer than the width. Write and solve the system of equations using the substitution method

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MohamedSharif MohamedSharif

26-10-2016

p=2(l+w)
50=2(4+w)
50=8+2w
collect the like terms 50-8=2w
42=2w divide both sides by 2
w=21

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