Tuesday, May 12, 2015

Repeating decimals.

This section, we learned how to write a repeating decimal into a fraction. When we look at a repeating decimal, we can tell that it is the sum of many fractions. For example, 0.4444.....could be written as 0.4+0.04+0.004........  to write the whole thing into a fraction, we have to find the rate.  The rate could be found by diving any consective terms.  In this case is 1/10.  The formula for thia is S= a/1-r.   a represents the first term.   the sum that we get would be this decimal as fraction.  One important thing to remember is that, when r is greater than 1.  The sum do not exist. 
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