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19 September, 16:09

Ashton estimates the square root of 72 in the following way: √72 = 2√36=2*6=12 A) Explain why his reasoning is incorrect. B) Estimate the square root of 72 to the nearest tenth without using your calculator. Show your work.

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  1. 19 September, 19:57
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    8.5

    Step-by-step explanation:

    To find √72, we must factor 72, remembering that the factor 36 is a perfect square:

    √72 = √2·√36, or 6√2. Ashton failed to take the square root of the factor 2 of 72.

    √72 = 6√2, and √2 is approx. 1.414.

    Multiplying 1.414 by 6 results in 8.5, which is to the nearest tenth.
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