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An argument is valid if and only if the following is impossible: all of the premises are true and the conclusion is false. E.g. the argument below is valid:(1) All men are mortal(2) Socra...

1kg = 1000grams 5kg = 5000 grams. 5kg will give 20 bags (5000/250). Total amount she will make from selling is £13. Hence, profit percentage is (13-10)/10*100. Which gives profit percentage since profit i...

Let's first think about what it means when the line crosses the x-axis. If we consider a normal x-y coordinate plane, every point on the x-axis has a y value of 0. So if we are trying to find out where th...

Step one, we need to assess what the question is asking us to do, in this case, find the turning points.The turning points on the graph are where the gradient is equal to zero, so in order to find the tur...

3-bromo 3 methyl pentane will be the major product while 1 bromo 3 methyl pentane will be the minor. This is due to a more stable carbocation being formed. A secondary carbocation is more stable than a pr...