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If one of the lines given by kx^(2)-5xy-...

If one of the lines given by `kx^(2)-5xy-3y^(2)=0` is perpendicular to the line `x-2y+3=0`, then k=

A

`2`

B

`-11/2`

C

`-2/3`

D

`3`

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TARGET PUBLICATION-PAIR OF STRAIGHT LINES-COMPETITIVE THINKING
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