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Firstly, a depreciation of a currency; such as the 'pound sterling' in the United Kingdom, can be defined as a fall in the external value of the currency in relation to another currency of another country...

Surface area:We know that the base of a cone is a circle, which has a surface area of πr², where r is the radiusThe rest of the area will be π, r and l (the slanted length) multiplied togetherA...

The formula to find the cosine of the angle is: cosA= u.v/|u|x|v|; 1.u.v means that you multiply the x coordinates together, then the y coordinates and the z coordinates,...

Initially it helps to read over the question a couple of times underlining/ highlighting all important information ie. volumes and concentrations. Next it always helps to have a chemical equation to work ...

Skinner believed that children learn language in the same way that they learn their other behaviour and stated that this was through a system of positive and negative reinforcement. When a child imitates ...