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There's no easy answer to this, and don't be afraid to say so. Address the fact that there is no set definition and that its ambiguity is precisely what Anthropologists and Archaeologists set out study. H...

This is a big question. First, in answering this question, it is helpful to know when the British empire collapsed (could ask back to student for more effective engagement). Most of Brita...

The vapour inside a fluorescent tube is excited and ionised by the electrode either end of the tubes. The excited electrons inside of the vapour are unstable and so decay into lower energy states. The dif...

aim is to move all numbers to one side and all the x to one side.
whatever you do to one side, you must do to the other side.
For example I want to remove -9 on the left by adding +9 to left si...

A/(3+x) + B/(1-x) + C/(2x+1) = (9x^2 + 43x + 8)/(3+x)(1-x)(2x+1)So... A(1-x)(2x+1) + B(3+x)(2x+1) + C(3+x)(1-x) = (9x^2 + 43x + 8)Insert x=1Equation becomes 12B = 60 so B = 5.Then insert x=-3Equation beco...