Respuesta :

You add the x-coordinates and then divide the sum by 2, then you get the x -coordinate of the midpoint. Do the same with the y-coordinates.
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The midpoint of the CD is E = (1, -3.5) if C=(9, 2) and D= (-7, -9)​ the answer is (1, -3.5).

What is an ordered double?

It is defined as a representation of coordinates in a two-dimensional coordinate plane. It has a list of two elements in it, such as (x, y).

We have two order double:

C = (9, 2)  and

D = (-7, -9)

The midpoint of CD:

Let E is the midpoint.

E(x) = (9-7)/2 = 1

E(y) = (-9+2)/2 = -3.5

E = (1, -3.5)

Thus, the midpoint of the CD is E = (1, -3.5) if C=(9, 2) and D= (-7, -9)​ the answer is (1, -3.5).

Learn more about the order double here:

brainly.com/question/10757890

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