What are the two solutions of the equation?
Ox= vs and x= - 5
Solve the quadratic equation by completing the square.
0 = x2 - 6x + 4
4= x2 - 6x
4+9 = (2x2 - 6x +9)
5 = (x – 3)2
x= 3+
5 and x = 3 - 5
:5+ çş andx=5 - 13
andx=-

  21.3

step-by-step explanation:

multiplying the given equation by c/sin(25°), we get

  c = 9/sin(25°) ≈ 21.2958 ≈ 21.3

we assume "c" is the length of ab, the side opposite angle c in triangle abc.

step-by-step explanation: h: (- 3, 6)

m: (1, - 2)

o: (7, 6)

r: (- 9, - 2)

midpoint of hm: (- 1, 2)

midpoint of or: (- 1, 2)

therefore, b is the midpoint of both diagonals bisect each other !

to prove the diagonals are perpendicular, show that the product of the slopes = - 1

77

step-by-step explanation: