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ExtremeBDS [4]
3 years ago
9

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

Mathematics
1 answer:
Svetach [21]3 years ago
8 0
<span>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</span>
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64k^2 - 16k +1

Step-by-step explanation:

We can rewrite this as

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5 0
3 years ago
Some girls in a Girl Scout troop are pairing up with some boys in a Boy Scout troop to practice square dancing. Two-thirds of th
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Answer:

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Step-by-step explanation:

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To get the fraction of the scouts that are square dancing,  we have to add the fraction of girls ,  with the fraction of boys.  

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5 0
2 years ago
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