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Step 1: Rearrange one equation to make y the subject. In equation B, we can move the 3x to the other side, making it negative and making the equation y=23-3xStep 2: Substitute our new value for y into equ...

Totalitarian states often rely on terror to control their country.  Hitler and Stalin were no exception to the rule.  Indeed, these two dictators extensively used terror in order to consolidate thei...

The aim here is to find the probability that the football match is cancelled in both the case that it rains and in the case that it doesn't. This helps to break the question down; we can find the probabil...

A mole is a unit of 'amount of stuff' and is equal to 6.022x10²³. It is such a big number because we use the mole to describe how many atoms we have of something, so instead of saying "I h...

Step 1. Pick one of the equations and move all of the x values to one side of the equal and move all others to the other side e.g X = 2y + 3Step 2. Make sure the X value is not times by a number e.g 2...