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This question is most simply solved with a probability tree diagram, where you just follow the paths of picking two same coloured beads. The first branch would be picking two red beads. P(R1) = 5 / 12, an...
The equation of a circle is given in the form (x-a)2 + (y-b)2 = r2, in which the centre of the circle is (a,b) and the radius of the circle is 'r'. If you can figure out o...
Magnesium in a metal, whereas oxygen is a non metal - therefore magnesium oxide is formed by an ionic bond (if it were 2 non metals it would be a covalent bond). It is important to understand that atoms p...
Price elastic refers to when a change in the price of a good or services creates a larger percentage change in the demand for that good, or PED > 1. An example of an elastic good is Hovis Bread, becaus...
Graphically, the solution of a pair of simultaneous equations is the point of intersection between both curves. If we want only one solution to the system of equations, then there should only be one point...
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