Wiki User
β 13y agoIt'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.
Wiki User
β 13y agoThere 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.
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.
Positive controls : an experimental treatment that will give the desired result Negative controls: An experimental treatment that will NOT give the dersired result.
A positive number divided by a negative number, or vice versa, will give you a negative number.
Multiplying a positive and negative number will give a negative result. The result is a negative number.
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.
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.
If you multiply two positive numbers, or two negative numbers, the result will be positive.If you multiply a positive and a negative number, the result will be negative.The same rules apply for division - a positive number divided by a negative number, or a negative number divided by a positive number, will give a negative result.In any case, most of the calculation is the same as for positive numbers - you only have the additional complication of deciding whether to put a plus sign or a minus sign in front of the result. For example, -8 / 2 = -4; the absolute value (4) is the same as when you divide 8 / 2, only the sign changes.If you multiply two positive numbers, or two negative numbers, the result will be positive.If you multiply a positive and a negative number, the result will be negative.The same rules apply for division - a positive number divided by a negative number, or a negative number divided by a positive number, will give a negative result.In any case, most of the calculation is the same as for positive numbers - you only have the additional complication of deciding whether to put a plus sign or a minus sign in front of the result. For example, -8 / 2 = -4; the absolute value (4) is the same as when you divide 8 / 2, only the sign changes.If you multiply two positive numbers, or two negative numbers, the result will be positive.If you multiply a positive and a negative number, the result will be negative.The same rules apply for division - a positive number divided by a negative number, or a negative number divided by a positive number, will give a negative result.In any case, most of the calculation is the same as for positive numbers - you only have the additional complication of deciding whether to put a plus sign or a minus sign in front of the result. For example, -8 / 2 = -4; the absolute value (4) is the same as when you divide 8 / 2, only the sign changes.If you multiply two positive numbers, or two negative numbers, the result will be positive.If you multiply a positive and a negative number, the result will be negative.The same rules apply for division - a positive number divided by a negative number, or a negative number divided by a positive number, will give a negative result.In any case, most of the calculation is the same as for positive numbers - you only have the additional complication of deciding whether to put a plus sign or a minus sign in front of the result. For example, -8 / 2 = -4; the absolute value (4) is the same as when you divide 8 / 2, only the sign changes.
Positive controls : an experimental treatment that will give the desired result Negative controls: An experimental treatment that will NOT give the dersired result.
A positive number divided by a negative number, or vice versa, will give you a negative number.
Multiplying a positive and negative number will give a negative result. The result is a negative number.
A negative number. For example, -4/2=-2
2 negatives equal a positive or if you multiply a negative by a positive it is larger negative if you multiply a negative and a negative it become positive because doing something negative times is getting bigger
A negative number times a positive number will give you a negative product.A negative number times a positive number will give you a negative product.A negative number times a positive number will give you a negative product.A negative number times a positive number will give you a negative product.
Pretend the negative number is positivedivide the positive number by a positive numbermake the result negative.For example, divide 12 by -6:Pretend -6 is 6divide 12 by 6 to get 2make the result negative to give -2Thus 12 ÷ -6 = -2
Aromatic aldehydes, such as benzaldehyde, typically do not give a positive Fehling's test due to the lack of alpha-hydrogens required for oxidation. Aromatic aldehydes are not easily oxidized in the Fehling's test compared to aliphatic aldehydes.
The answer to this depends on what you are doing with the numbers..... * A negative added to a negative gives a negative (-3) + (-5) = -8 * A negative subtracted from a negative may give either a negative or a positive (-3) - (-5) = +2 (-5) - (-3) = -2 * A negative multiplied by a negative gives a positive (-3) x (-5) = +15 * A negative divided by a negative gives a positive (-3) ÷ (-5) = +0.6