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  • 19-09-2022
  • Mathematics
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Select the approximate value of 9 - √7 on a number line.

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LammettHash
LammettHash LammettHash
  • 19-09-2022

The value of 9 - √7 is between 6 and 7:

4 < 7 < 9

⇒   √4 < √7 < √9

⇒   2 < √7 < 3

⇒   -3 < -√7 < -2

⇒   9 - 3 < 9 - √7 < 9 - 2

⇒   6 < 9 - √7 < 7

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