Expect more questions from me today cuz I’m a dummy who don’t get math at all anyway mind answering this it’s 40 points

The answer would be 4.3!

4.3

Step-by-step explanation:

Let's go through each answer choice. Whatever number we get, when we multiply that number by itself, it should be pretty close to 19.

1:

4.6 x 4.6 = 21.1621.16 is pretty close to 19, but let's see if we can do better.

2:

3.8 x 3.8 = 14.4414.44 is a bit far from 19, so we can take out this option.

3:

5.4 x 5.4 = 29.1629.16 is really far away from 19, so we can cross this option out.

4:

4.3 x 4.3 = 18.4918.49 is extremely close to 19 among all these answers, so 4.3 is the correct answer.

What are 5e numbers?