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First we need to factorise the numerator into two expressions. We can see one expression must start (3x + ?) and the other therefore must hold (x + ?), we know this because the two bracke...

Since arteries need to pump blood to the entire body under high pressure, they are very strong with thick muscular walls. Artery walls are also elastic, which allows them to stretch and spring back in ord...

The first reason is that Stalin wielded significant power and influence as General Secretary of the Party, having been appointed in 1922. Due to his position as an administrator he was both underestimated...

A sector represents a fraction of a circle. The fraction depends on the angle of the sector, X, and the total angle in a circle which is 360, such that the fraction is x/360. In this case the fraction is ...

In a sentence, the object can be either direct or indirect. When the object is acted on directly, it takes the accusative case. Example: 'Sie isst den Apfel' (She is eating the app...