4.
Zero divided by anything (except itself) is zero.
No, zero divided by four is not equal to four. It's actually equal to zero. In fact zero divided by any number is equal to zero, except for zero divided by zero because you can't divide by zero.
0
Zero.
zero
Undefined: You cannot divide by zero
Undefined. Division by zero is forbidden in mathematics.
5.5. And just because you cannot divide by zero does not make the answer zero. It would be 5.5 plus 0. Which is 5.5. Now if it was 5.5 divided or multiplied then you would have zero.
0.8 / 0.4 = 2
0
zero. they cancel each other out.
Division by zero is not "not defined". Division is the repeated subtraction of one thing from another, counting the number of times you subtract. If you divide 15 by 3 you get 5. You can also subtract 3 from 15 5 times. If you subtract zero from something, that something does not change, so you could say that anything divided by zero is infinity. (End of answer to question asked, but....) By definition, a positive number divided by zero is positive infinity, and a negative number divided by zero is negative infinity. Also, what "is" not defined is zero divided by zero. We call that indeterminate. However, its not quite that simple. For example, 2x / x when x = 0 is indeterminate, but the limit of 2x / x as x approaches zero is very determinant: it is 2