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When you first come across algebra, it may be a bit tricky to get your head around as it involves more abstract concepts than we may have previously seen in maths. However, once you understand the basic p...

Considering the heart has 4 distinct chambers - for this question it's best to start in the right atrium. (Supported by a diagram) Deoxygenated blood is returned to the right atrium from the rest of the b...

This relies on the knowledge that an acid + base --> salt + water.Once you have realised this - pick out the acid and the base (remember acids have H+ and bases OH-)Now, you know that water will be mad...

First you want to find a square number that is a factor of 75. In this case it is 25, as 25 x 3 = 75 . With this information you can expand the surd into:sqrt(25) x sqrt(3)
As 5^2 = 25, this can beco...

b/a = -6 / 2 = -3 .........a - b = 2 - (-6) = 8 ............ab = 2 x -6 = -12 ...............Therefore ab, -12, has the smallest value.