2 answers
(click or scroll down)
The correct statement is:
√71 < √61
√71 < √61
√81 > 9
√71 < √61
√81 < 9
√71 < √61
By rational approximations, we can simplify the square roots to whole numbers to compare them accurately.
√71 is not a perfect square, so we can use rational approximations to estimate. The square root of 71 is approximately 8.4.
√61 is also not a perfect square, so we can use rational approximations to estimate. The square root of 61 is approximately 7.8.
Therefore, √71 < √61 is not true.
√81 is a perfect square, and the actual value is 9.
Since 9 is a smaller number than √81, the statement √81 < 9 is also not true.
Therefore, the only true statement using rational approximations is: √81 > 9.