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explain why [tex] \sqrt{89} [/tex] must be between 9 & 10

Sagot :

[tex]\sqrt{81}=9 \\ \sqrt{100}=10[/tex]

The square root of 81 is 9, the square root of 100 is 10. 89 is between 81 and 100, therefore the square root of 89 must be between 9 and 10.