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(2x + 3)/(x+4) - (3x - 6) = 4 Initial equationTimes all terms by (x + 4) (2x + 3) - (3x - 6)(x + 4) = 4 (x + 4)Multiply out the brackets (2x + 3) - (3x2 + 12x - 6x - 24) = 4x + 16Remove from br...
It is very easy to calculate the area of the whole circle and divide it by 4.The area of the whole circle can be calculated using the formula A = pir2, where r is the radius of the circle a...
Because chlorine exists as two isotopes, two molecular ions will be present, and their relative heights will correspond to the abundances of the isotopes. The tallest peak will be 3 times the height of th...
First we need to calculate the total mass of a CO2 molecule. This is done by summing up the individual masses of all the atoms. To find these, we look at the periodic table and see that the mas...
This is a really common pitfall, because it is tempting just to tell the examiner everything you know and get carried away telling the story. I find the best way to avoid this is to really think about and...
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