Ask Question
14 January, 17:15

What is the rational number equivalent to 1.28? The 1.28 has a line above the 28

+3
Answers (1)
  1. 14 January, 20:45
    0
    the line over the 28 means the 28 repeats forever.

    1.282828 ... and so on

    let x be the rational number 1.28 ...

    we can use this trick:

    100*1.282828 ... = 128.282828 ...

    (the decimal 28 part repeats) 100x = 128.28 ...

    next: 100x - x = 128.282828 ... - 1.282828 ...

    the. 282828 ... part will be subtracted away

    99x = 127

    divide both sides by 99 to get

    x = 127/99
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “What is the rational number equivalent to 1.28? The 1.28 has a line above the 28 ...” in 📙 Mathematics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers