What is the difference between dilations and the other transformations?

1 answer:

3 0

All these appear to be physic phenomena because they do not change the composition of the matter.

<span>However, while rotations, translations and reflexions do not alter the volume of the matter, dilation does increase the volume. </span>

<span>Dilation, by definition, is an enlargement of the matter and directly opposed to contraction. For example, heat dilates the matter, while colds contract it. The exception to this is that when water becomes ice due to cold, it increases in volume.</span>

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An elevator went up 15 floors, down 9 floors, up 11 floors, and down 19 floors. Find the net change.

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Answer: The net change would be -2.

Step-by-step explanation: The upward change of elevator is represented by positive sign while the downward change represented by negative sign.

Given, First the elevator goes up 15 floors, change = + 15, Then it goes 9 floors down, change = -9, Then it goes 11 floors up,Change = + 11, Finally, it goes 19 floor down, Change = - 19 So, the net change = sum of total changes = 15 - 9 + 11 - 19 = -2

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