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Olympiad-Math
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Class 9
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Coordinate Geometry
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Q)
Find the value of k if the straight line 2x+3y+4+k(6x-y+12)=0 is perpendicular to the line 7x+5y=4
( A ) -33/37
( B ) 19/37
( C ) -29/37
( D ) none of these
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