Patrick B. answered • 08/31/19
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3 = (x+21)/2
6 = x + 21
x = -15
8 = (y+5)/2
16 = y+5
y=11
(-15,11)
Alondra T.
asked • 08/31/19geometry homework
Point C(3,8) is the midpoint of AB. One endpoint is A(21,5). Find the coordinates of endpoint B.
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