Respuesta :

apologiabiology
midopint of (x1,y1) and (x2,y2) is [tex](\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})[/tex]

basicaly average the x and y values

so
(0,0) and (20,0)
add 0 and 20 and divide by 2
basically divide 20 by 2

answer is D

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