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Two vertices of a triangle are (3,-5)a n...

Two vertices of a triangle are `(3,-5)a n d(-7,4)dot` If its centroid is `(2,-1),` find the third vertiex.

A

(10, 2)

B

(-10, 2)

C

(10, -2)

D

(-10, -2)

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The correct Answer is:
C
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