Question

Using a number line, what is the approximate value of 19−−√
?(1 point)
Responses

4.7
4.7

4.3
4.3

4.1
4.1

4.5
4.5

Answer 1

sqrt(19) is between 4 and 5 (since 4^2 = 16 and 5^2 = 25).
4.3^2 = 18.49 and 4.4^2 = 19.36, so sqrt(19) ≈ 4.359, which is between 4.3 and 4.4.
Closest choice: 4.3.