Find the Missing Symbol in Sequence: -0.9:-9:-4?0

Question

Fill in the missing symbol (?):

$-0.9:-9:-4\text{?}0$

00:00 Complete the appropriate sign

00:04 Let's take only the signs and check what will be the result sign

00:11 Negative divided by negative always equals positive

00:17 Positive divided by negative always equals negative

00:21 Negative is necessarily less than 0

00:24 And this is the solution to the question

Note that in the first step we are dividing a negative number by a negative number:

$-:-=+$

This means that the exercise can be written as follows:

$+:-?0$

Now we are dividing a positive number by a negative number:

$+:-=-$

Therefore, the final exercise will look like this:

$-?0$

We are left with a negative number, meaning a number less than zero.

Therefore, the answer is:

$- < 0$