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  1. ticklea

    Help! Equation of a Straight line.

    Find the gradient of the straight line perpendicular to the line with x intercept 3 and y- intercept2. Preliminary Question. Answer:1.5 Please show working out :D
  2. ticklea

    Corrosive material?

    High I was wondering what affect highly corrosive materials can have on your body during an experiment if in contact with various parts. e.g skin, eyes, mouth? Thanks
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