Iam a secondary student with a math question I don't know how to do. This is the question: Explain whether each decimal number represents a rational number. (a) 0.16 (b) 0.12 (c) -3.125 (d) -0.27 (e) -0,212 112 111 2 .... (f) 0. 457 92 If it wouldn't be a problem i would really appreciate it if you sent back the instructions on how to do the question. My name is Kristin Thank-you for you time Hi Kristin A rational number is one that can be written as a positive or negative fraction (a/b) where a and b are integers, so you need to decide whether or not you can re-write each of these decimal fractions in the form a/b. Decimals that can be written as a/b have either a finite number of places after the decimal as 3/4 = 0.75, or a decimal part that repeats as 3/7 = 0.428 571 428 571... (a) can be written as 16/100 and so it is rational. (c) can be written as -3125/1000 and it is also rational. (e) cannot be written as a fraction since it goes on forever and does not repeat (If it repeated you would be able to change it to a fraction.) so it is not a rational number and is called an irrational number.
You should now be able to do the rest of the questions.
Good luck! |

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