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One way to find the values of x and y is to substitute the value of x into one of the equations. To sub in x we need to rearrange an equation to get x on its own. We can change the second equation to x = ...

The brother receives £18 less, meaning the sister receives £18 more than the brother.7 - 4= 3. This means that 3 parts of the ratio is equal to £18, therefore 1 part of the ratio is equal to £6.Brother ge...

Firstly, there was disagreement over the role of Austrians in Italy which ultimately led to Austrians remaining in control of the region. Austrian control of Italy ensured that Italy could not fully unify...

Total revenue = Units sold x selling priceSo £12.50 x 3000 = £37,500Fized costs = £15000Vaeiable costs = £32,000 - £15,000 = 17,000

An increase in pressure will cause the equilibrium to shift towards the side with the smaller number of molecules. A decrease in pressure causes the equilibrium to shift towards the side with larger numbe...