* If "a" is positive, "-a" is negative.* If "a" is negative, "-a" is positive.
* If "a" is zero, "-a" is zero.
If you want to force a negative number, you can write -|a|, i.e., the negative of the absolute value.
The expression -a does not always represent a negative number because could be negative changing the negative sign in front to a positive sign.
No. If x, itself, is negative then -x is positive. Or x could be zero, in which case, -x is not negative, either.
A positive number multiplied by a negative number will always result in a negative number.
Yes it can
Yes, a negative number subtracted from a positive number will always be positive. Subtracting a negative number is the same as adding the opposite of the negative number. The opposite of a negative number is always positive. A positive number plus a positive number is always positive.
It is 2700000.
x may not always represent a positive number because there are equations that make a variable a negative number
No. If x, itself, is negative then -x is positive. Or x could be zero, in which case, -x is not negative, either.
A positive number multiplied by a negative number will always result in a negative number.
Yes it can
A positive number times a positive number will always get you a positive number A negative number times a negative number will always get you a positive number (same signs will get you a positive number) but A positive number times a negative number will always get you a negative number or A negative number times a positive number will always get you a negative number (different signs will get you a negative number)
If x is used to represent the unknown number, then the expression for 20 times a number would be 20x.
use a absolute value to represent a negative number in the real world
Yes, a negative number subtracted from a positive number will always be positive. Subtracting a negative number is the same as adding the opposite of the negative number. The opposite of a negative number is always positive. A positive number plus a positive number is always positive.
It is 2700000.
For example: | x | = -1 Or any other equation where the absolute value of any expression is negative. This doesn't have a solution, because the absolute number of any expression is always positive, or zero, never negative.
Always.
use a absolute value to represent a negative number in the real world