elizabeththomas19 elizabeththomas19
  • 24-05-2020
  • Mathematics
contestada

What’s the correct answer for this?

Whats the correct answer for this class=

Respuesta :

ronhagrid310
ronhagrid310 ronhagrid310
  • 24-05-2020

Answer:

As shown in picture, if MC is median of triangle ABC, M is midpoint of AB.

Denote the coordinate of A, B and M are (Ax, Ay), (Bx, By) and (Mx, My) respectively.

The formula relating coordinate of A, B and M is:

Ax + Bx = 2Mx

Ay + By = 2My

In detail,

-1 + Bx = 2 x 4 => -1 + Bx = 8 => Bx = 9

11 + By = 2 x 11 = > 11 + By = 22 => By = 11

=> Option D is correct

Hope this helps!

:)

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