Question

Jillian said StartRoot 25 EndRoot is irrational because it is a square root. Why is she incorrect? Jillian is incorrect because the square root of StartRoot 25 EndRoot = 5.5. Jillian is incorrect because a square root is always rational. Jillian is incorrect because square roots of perfect squares are rational. Jillian is incorrect because the decimal expansion of StartRoot 25 EndRoot is a repeating decimal.

Answer 1

C

Explanation:

Square root of perfect square are rational.

A rational number is one that has a finite point meaning it can be changed to a proper fraction.

For example;

√6 =2.44948..... and it continues.

It has not finite point hence this is irrational.

While

√25 = 5

It has a finite point.

Answer 2

Jillian is incorrect because square roots of perfect squares are rational.

Explanation:

√25 = √(5²) = 5 - rational

25 is perfect square.