anonymous
  • anonymous
Find a rational number and an irrational number that are between 7.7 and 7.9. Include the decimal approximation of the irrational number to the nearest hundredth.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
@Michele_Laino @Nnesha
anonymous
  • anonymous
ok so this is weird i dont know how to start or what to do... :(
Michele_Laino
  • Michele_Laino
If I call with q the rational number, we have: \[\Large 7.7 = \frac{{77}}{{10}} < q < \frac{{79}}{{10}} = 7.9\]

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anonymous
  • anonymous
can you do this step by step please? i dont understand
Michele_Laino
  • Michele_Laino
we can write this: \[7.7 = \frac{{77}}{{10}}\] and \[\frac{{79}}{{10}} = 7.9\]
anonymous
  • anonymous
ohhhhh ok
Michele_Laino
  • Michele_Laino
so a rational number which is between 7.7 and 7.9, also checks this equivalent condition: \[\Large 7.7 < q < 7.9 \Rightarrow \frac{{77}}{{10}} < q < \frac{{79}}{{10}}\]
anonymous
  • anonymous
oh so wouldnt it have to be 78/10?
anonymous
  • anonymous
its the only one in between lol
anonymous
  • anonymous
7.8
Michele_Laino
  • Michele_Laino
correct, a possible choice for q is 78/10= 39/5
anonymous
  • anonymous
ohh ok ill come back later and write the answer but i have another and i think the last question:)
Michele_Laino
  • Michele_Laino
we have to find an irrational number

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