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The gradient of a line perpendicular to the line ny+(2n+3)x=4 is -0.2 .Find the value of n
7 years ago

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Arora
The given line can be rewritten in the form y = mx + c :

y = -(2n+3)x/n + 4/n

Here, 'm' is the gradient of the line.

m = -(2n+3)/n

If a line perpendicular to this line has a slope n, then,

m = -1/n

So:

-(2n + 3)/n = -1/-0.2
=> (2n +3) = -5n
=> 2n + 3 = -5n
=> 7n = -3
=> n = -3/7
7 years ago

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