If x = –3 is the only x-intercept of the graph of a quadratic equation, what is the best description of the discriminant of the equation?
a. the discriminant is negative.
b. the discriminant is –3.
c. the discriminant is 0.
d. the discriminant is positive. oi

Which of the following is not a way in which a vascular plant's xylem and phloem are similar?

Sand spinifex grass is adapted to growing on sand dunes. it is a rapidly spreading plant and the creeping runners produce new root systems. which of these best explains the benefits of these features? a. it limits water loss through the leaves. b. it provides support by anchoring the plant. c. it protects the plant from predators. d. it allows the plant to tolerate salt. reset submit

Which of the following would be an important part of a multi-step plan to restore the stability of the red-cockaded woodpecker's ecosystem?