Question

7. If origin is the centroid of triangle A(a, 3), B(5, b) and C(-1, 4). Find the values of a and b​

Answer 1

Answer:

Find all values of x so that the triangle with vertices A=(−3, 1, x), B=(−3, 4, −2), and C=(−2, −2, 2) has a right angle at A.

Triangle PQR is transformed to triangle P'Q'R'. Triangle PQR has vertices P(3, −6), Q(0, 9), and R(−3, 0). Triangle P'Q'R' has vertices P'(1, −2), Q'(0, 3), and R'(−1, 0). Plot triangles PQR and P'Q'R' on your own coordinate grid. Part A: What is

Answer 2

Step-by-step explanation:

coordinates of centroid is (0,0)=(a+5-1/3,3+b+4/3)

a+4=0,b+7=0

a= -4,b= -7

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