exam Maths Puzzle Numerical Ability

FIND THE SLOPE OF ANY LINE PERPENDICULAR TO THE LINE THROUGHT POINTS (0,5) AND (-3, -4)

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exam Other Question

A store sells an item for 4/5 of the cost paid by the store plus the cost paid by the store. The idtem sells for $6.30. How much did the store pay? 1000r^3-1=0

(15/16x-1)^2=0