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We can solve this pair of simultaneous equations using substitution. To do this, we firstly have to rearrange one equation to get one variable on its own. For example, we can subtract 2y from each side of th...

If m=a x n=a y and a 2 =(m y n x ) z Show xyz=1. The above question is an indices question from an AS textbook. This is question 7 so I will tell you now that this is perhaps a higher difficulty question but...

The pluperfect tense helps to add extra information to an account from the past. It refers to events that took place before the events of the story in the past. For example, I went to the concert because I h...

Denominator of the power expression indicates the degree of the root in this case its the cubic root. Numeriator denotes the degree of power in this case squared. The negative sign means to inverse the base ...

One way in which the effectiveness of checks on Presidential power is lacking is war powers. In the Constitution the President cannot declare war only Congress can. Congress has not declared war since 1941, ...