Q- If equation k * x ^ 2 + 6x + 3 = 0 has real and equal roots then (A) (B) (C) + sqrt(3); - sqrt(3); plus/minus sqrt(3) (D) ±3​

Itook a better photo of the question so y’all can see it i hope it’s a fine photo

Which three lengths could be the lengths of the sides of a triangle? 21 cm, 7 cm, 7 cm 9 cm, 15 cm, 22 cm 13 cm, 5 cm, 18 cm 8 cm, 23 cm, 11 cm

In the diagram of circle o, what is the measure of zabc?