Lester has to determine which of these square roots is rational.
A. √27
B. √55
C. √60
D. √81

Lester said that Choice C is correct because the number under a square root symbol needs to be even for the square root to be rational. What mistake did Lester make?

Just because a number is odd doesn't mean its not rational. For a square root to be a rational number it has to be a number that dosen't infinitely go on like choices A, B, and C.

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Correct Answer:

D. √81

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Explanation:

Choice D is the only square root that doesn't have a infinite decimal because √81 equals 9.

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Hope This Helps :)

paytonbrannen46516 paytonbrannen46516 · Answer 2 · 2021-02-12T19:14:51+01:00

paytonbrannen46516 paytonbrannen46516

12-02-2021

Answer:

D

Step-by-step explanation:

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Lester has to determine which of these square roots is rational. A. √27 B. √55 C. √60 D. √81 Lester said that Choice C is correct because the number under a square root symbol needs to be even for the square root to be rational. What mistake did Lester make?

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Lester has to determine which of these square roots is rational.
A. √27
B. √55
C. √60
D. √81

Lester said that Choice C is correct because the number under a square root symbol needs to be even for the square root to be rational. What mistake did Lester make?