Probability

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 Probability is the branch of mathematics concerning numerical descriptions of how likely an event is to occur, or how likely it is that a proposition is true. 

Watch the video on probability and sample space. Answer the questions below. 


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Subtracting Fractions with Unlike Denominators

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      Subtracting Fractions with unlike denominators is exactly the same as adding fractions with unlike denominators.      If fractions have the same denominator you can add or subtract normally.                                                    2 /3 - 1 /3 = 1 /3      If you take a look you can see the denominator does not change, though the numerator does.      Though if the denominator is not the same you have to change it. Example:                                                  5/6 - 1/3      The denominator is not the same so, first thing we must do is find the lowest common multiple      ...
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Adding Fractions with unlike denominators.

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     Today we will look at adding fractions. When we have fractions with the same denominator it's very easy to add.      Ex. 1/3 +1/3 = 2/3       But what happens when we have fractions that have different denominators? This is when we have to find the lowest common denominator.      Ex. 1/2+1/4      In this case we will have to look at the multiples of 2 and 4 in order to find the common multiple between the two numbers.      2 - 2, 4 , 6, 8, 10, 12     4 - 4 , 8, 12, 16, 20     The lowest common multiple is 4. Since 1/4 already has a denominator of 4, we only have to change 1/2 to have a denominator of four. How we do this is by multiplying 1/2 by 2 in order to get a denominator of 4, what you do to the bottom you must do to the top.      1/2*2/2 = 2/4     Now we can add the two fractions together!     2/4 + 1/4 = 3/4     Please wa...
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