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yawa3891 [41]
3 years ago
7

What fraction is equivalent to 0.7 repeated

Mathematics
2 answers:
pishuonlain [190]3 years ago
3 0
.7 repeating would make it 7/9
storchak [24]3 years ago
3 0

1.) Set up the equation x = 0.777...

2.) Multiply both sides by 10, which will get you 10x = 7.777...

3.) 10x = 7.777... and x = 0.777...

10x - x = 7.777... - 0.777...

9x = 7

x = 7/9

Hope this helped.

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Answer:

  a.  (-1/2, 5)

Step-by-step explanation:

The coefficients of x have opposite signs, so the x-terms can be eliminated by adding the two equations.

  (2y -12x) +(3y +12x) = (16) +(9)

  5y = 25 . . . . . . simplify

  y = 5 . . . . . . . . .divide by 5

This matches only answer choice A.

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<em>Check</em>

The other part of answer choice A is x = -1/2. We can test this to make sure it works:

  2(5) -12(-1/2) = 16

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nydimaria [60]
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melomori [17]

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