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Water can change from one phase to another, given the right condition.whay condition will allow water to evaporate? When solving a system of linear equations, there are three cases that may exist. What are those and when do they occur? If I get deferred 3x in arow will I be deferred for ever? Why study astrophysics if you can study astronomy instead? A-level maths help.
A(7, 2) and C(1, 4) are two vertices of a square ABCD. Find the equation of the diagonal BD?