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18-06-2016
Mathematics

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I was told to find the perpendicular distance between the lines 2x+4y+10=0 and 2x +4y+25=0

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18-06-2016

Hello,
y=-x/2 -5/2
y=-x/2-25/4

d=|-5/2-(-25/4)|/√((-1/2)²+1)
d=15/(4*√(5/4))=15/(2*√5)=3/2*√5

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