I have a question. My teacher wrote down that 0 is less than or equal to 10 is true. Why is that?

The word "or" shows that only one of these needs to be right.

Then how come when it says 0 is greater than or equal to 4 she says that is false?

zero is not greater than, nor is zero equal to 4

I meant to say -4, sorry.

The statement "0 is less than or equal to 10" is true because the number 0 is indeed less than or equal to the number 10. To understand why this is the case, let's break down the comparison:

In mathematics, the symbol "<=" represents the "less than or equal to" relationship. It means that the expression on the left side of the symbol is either less than or equal to the expression on the right side.

In this case, we're comparing 0 to 10. Zero (0) is a number that denotes "nothing" or "no quantity," while 10 represents a quantity or value equal to ten.

When we compare these two values using the "<=" symbol, we consider the possibility that 0 could be less than 10 or that 0 could be equal to 10. Both scenarios satisfy the condition, making the statement "0 is less than or equal to 10" true.

To determine this, you can visualize a number line. On a number line, 0 is situated to the left of 10. Moving from zero to the right, you can see that zero is indeed less than 10. In fact, it is the first number you encounter before reaching 10.

Alternatively, you could also evaluate the statement numerically. Since 0 is not greater than 10 and it is not different from 10 (as zero equals ten), the only possibility left is that 0 is less than or equal to 10.

In summary, your teacher's statement is correct because 0 is indeed less than or equal to 10.