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The indicative is used to make factual statements or to describe real things and events. On the other side, the subjunctive is used to express desire, doubts, the unknown and the abstract. Subjunctive sen...

ratios are just fractions not written in fraction form, for example 8:9 ratio just means the first value is 8/(8+9) and the second value is 9/(8+9)if a question says that in a ratio of green apples to red...

At A-Level there are eight different statistical tests that you need to be aware of.
Chi-square: Used for nominal data and independent groups, also used for nominal data and a correlation Sign Test:...

This equation can be solved by factorisation. Start off with brackets : (x )(x ) =0. We need two numbers that multiply to give 6 and add/subtract to give 1. Start off with 1 and 6. They multiply to give 6...

Draw out a diagram of a right angled triangle. As the lengths of the sides of the triangle are in the ratio 3:4:5, start off by saying each side is 3cm (a), 4cm (b) and 5cm (c) respectively, with 5cm bein...