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The SA node initiates an impulse which travels across the atria causing them to contract and blood is forced actively into the ventricles. This is called atrial systole. The AV node then delays the impuls...

In terms of understanding the question, we are asked to look for a common rule that would help us find any term, or member, of the sequence in the question, no matter how big. The "nth" bit they...

Higher wages may increase consumer expenditure increasing aggregate demand - diagram showing aggregate demand increasing. This causes demand-pull inflation if demand rises by more than money supply and t...

x² -4x+4>0 => (x-2)(x-2)>0. We can illustrate this line on a graph showing a quadratic whose vertex is at (2,0). Therefore, the answer to our inequality is x<2,x>2 (but x does no...

The Electoral College is not the best method because campaigns focus on swing states, demonstrated by the fact that in the 2012 Presidential Election, 38 states were not visited a single time. This may ca...