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12-03-2015
Mathematics

contestada

The coordinates of the endpoints of CD
_
, in the
standard (x,y) coordinate plane, are (−4,−2) and (14,2).
What is the x-coordinate of the midpoint of CD
_
?

Respuesta :

12-03-2015

Use the first part of the midpoint formula:

(x1 + x2)/2

Plug in what we know:

(-4 + 14)/2

10/2

5

So the x-value is 5.

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