Answer: FIrst option, Fourth option and Fifth option.
Step-by-step explanation:
First it is important to know the definition of "Dilation".
A Dilation is defined as a transformation in which the Image (which is the figure obtained after the transformation) and the Pre-Image (this is the original figure, before the transformations) have the same shape, but their sizes are different.
If the length of CD is dilated with a scale factor of "n" and it is centered at the origin, the length C'D' will be:

Therefore, knowing this, you can determine that:
1. If
, you get:

2. If
, then the length of C'D' is:

3. If
, then:

4. If
, then, you get that the lenght of C'D' is:

5. If
, the length of C'D' is the following:

Answer:

Step-by-step explanation:
The expression
is a radical. To simplify pull out any perfect square factors.

Each of these expressions is equivalent.



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Answer: (8ab¹⁸ - 1)(8ab¹⁸ + 1) (Answer 3)----------------------------------------------------------
Answer:
Coordinates of B is (3,-4)
Step-by-step explanation:
You multiply -2 by 2 to get -4 and then create the equation
then you substitue -7 for +7 and add +7 to -4 which gives you 3 (x coordinate of B)
You multiply -1 by 2 to get -2 and then create the equation
then you subtract 2 by -2 which gives you -4 (y coordinate of B)
To check your answer use the midpoint formula 
which will give you the midpoint (-2,-1)