Do the following lengths form a right triangle

Acute scalene triangle.

Sides: a = 6   b = 8   c = 9

Area: T = 23.525

Perimeter: p = 23

Semiperimeter: s = 11.5

Angle ∠ A = α = 40.804° = 40°48'16″ = 0.712 rad

Angle ∠ B = β = 60.611° = 60°36'39″ = 1.058 rad

Angle ∠ C = γ = 78.585° = 78°35'5″ = 1.372 rad

Height: ha = 7.842

Height: hb = 5.881

Height: hc = 5.228

Median: ma = 7.969

Median: mb = 6.519

Median: mc = 5.454

Inradius: r = 2.046

Circumradius: R = 4.591

Vertex coordinates: A[9; 0] B[0; 0] C[2.944; 5.228]

Centroid: CG[3.981; 1.743]

Coordinates of the circumscribed circle: U[4.5; 0.909]

Coordinates of the inscribed circle: I[3.5; 2.046]

Exterior(or external, outer) angles of the triangle:  

∠ A' = α' = 139.196° = 139°11'44″ = 0.712 rad

∠ B' = β' = 119.389° = 119°23'21″ = 1.058 rad

∠ C' = γ' = 101.415° = 101°24'55″ = 1.372 rad

Hope This Helps!     Have A Nice Day!!

y = - 6

step-by-step explanation:

given the point (- 2, y) lies on the graph then it is a solution of it's equation.

substitute x = - 2 into the equation for value of y

y = 3(- 2) = 3 × - 2 = - 6

the point on the graph is (- 2, 6)

f(x) = y

f(-3) = -5

step-by-step explanation: