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It's saying subtract a negative number, so take away from something that negative is adding something positive.
Think about it like this, If you have a number 5, and someone says to you take away from 5 negative 2, you'd have 7. If what you subtract from something is negative, you gain.
I know it may not make sense, but think about it for a bit and I'm sure you'll get it, if not, just remember to do it when you're doing your work.
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Is a negative divided by a positive zero?
There is no such thing as a positive or a negative zero. A negative divided by a positive is a negative, and a positive divided by a negative is a negative. If you have a negative and a positive, the answer will be a negative. But if you have two negatives or two positives as the dividend and divisor, the answer will be a positive. In other words, dividing two positives or two negatives will always give you a positive. But dividing a positive and a negative will always give you a negative.
What is a negative divided by a positive divided by a negative?
The best way to figure this out would be to use an example. So suppose you had a -20 and divided that by a positive 5. That would give you a -4. Take that -4 and divide it by a -2 which would give you a positive 2 (knowing that two negative numbers cancel out to make a positive number). Thus a negative divided by a positive divided by a negative would give you a positive number.
What do you get when you divide a positive and negative number?
A positive number divided by a negative number, or vice versa, will give you a negative number.
What are positive and negative controls in an experiment?
Positive controls : an experimental treatment that will give the desired result Negative controls: An experimental treatment that will NOT give the dersired result.
What does negative divided by positive give you?
A negative number. For example, -4/2=-2
