Using rational approximations what statement is true

A. √71< √61
B. √71> √61
C. √81<9
D. √81>9

D. √81>9

To determine the correct statement using rational approximations, we can calculate the square roots using decimal approximations and compare them.

Let's calculate the square roots using a calculator:

√71 ≈ 8.426
√61 ≈ 7.810
√81 ≈ 9

Comparing these values to the options:

A. √71 < √61
8.426 < 7.810 (Not true)

B. √71 > √61
8.426 > 7.810 (True)

C. √81 < 9
9 < 9 (Not true)

D. √81 > 9
9 > 9 (Not true)

Therefore, the correct statement is B. √71 > √61.