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In situations like this I would always find it best to draw a diagram with all the information we know labelled on it. Firstly, however, notice that our measurements are in different units. You can conver...

This question can be treated like a normal binomial expansion question which is commonly seen at A level. The standard binomial expansion is (1+x)ⁿ = 1 + nx + (n(n-1)(x²))/2! where 2...

To form the perfect tense in German you use an auxiliary verb, either 'haben' or 'sein', plus the past participle of the main verb in the sentence. Most verbs take 'haben' when used in the perfect tense, ...

This will cause eutrophication. Under normal circumstances, nutrients are a limiting factor for algal growth. When the fertiliser leaches into the lake, the excess nutrients will therefore allow algae at ...

You take the present active infinitive of the verb, which is the part of the verb that means "to do something" and you add on the endings -m, -s, -t, mus, -tis, -nt. For example, the first perso...