Question

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

4.1
4.1

4.5
4.5

4.3
4.3

4.7

Answer 1

√19 is between √16 = 4 and √25 = 5. Since 19 is 3 above 16 and 9 total between 16 and 25, √19 ≈ 4 + 3/9 ≈ 4.33 (more precisely ≈ 4.359). The closest choice is 4.3.