The opposite of 0.3 on a number line is -0.3. It's like a mirror image, but with numbers. So if 0.3 is chilling on the right side of zero, -0.3 is hanging out on the left side, ready to cause some mathematical mischief.
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The opposite of 0.1 is -0.1. In mathematics, the opposite of a number is the number that, when added to the original number, equals zero. Since 0.1 is a positive number, its opposite would be a negative number with the same magnitude but in the opposite direction on the number line.
The number opposite -8.3 on the number line is 8.3. In mathematical terms, the opposite of a number is its additive inverse, which means that when you add a number and its opposite, you get zero. Therefore, -8.3 and 8.3 are opposites of each other.
I suppose you mean what is an opposite reciprocal? At any rate, we should start there. The opposite reciprocal is -(1/x) so let's take the number 5. The opposite reciprocal would be -1/5. If you want two lines to be perpendicular you must take the original slope of the first line and change it to its opposite reciprocal. For example: y=5x A line perpendicular to this line would be y=-1/5x.
The opposite of a number is its additive inverse, which means the number that, when added to it, results in a sum of zero. In this case, the opposite of 76 would be -76, as 76 + (-76) = 0. This relationship is based on the concept of symmetry around zero on the number line.
The opposite of an even number is an odd number.