Question

10. If the centroid of
triangle formed by (9,a),
(b,-4)and (7,8)is (6,8)then
the value of a and b are :​

Answer 1

Answer:

$a = 20 \\ \\ b = 2$

Step-by-step explanation:

$\frac{9 + b + 7}{3} = 6 \\ \\ b + 16 = 18 \\ \\ b = 2 \\ \\ \\ \\ \frac{a - 4 + 8}{3} = 8 \\ \\ a + 4 = 24 \\ \\ a = 20$