p^2+6p+9=0
The discriminant of a quadratic is the expression inside the radical of the quadratic formula.
b^2−4(ac)
Substitute in the values of
a, b, and c.
6^2−4(1⋅9)
Evaluate the result to find the discriminant.
36-4(9)
36-36
0
Answer:
A
Step-by-step explanation:
Can't be B and C because it's less than 1. Can't be D because there's a y intercept. Also, I could be wrong
Answer:
The third choice is the one you want
Step-by-step explanation:
The solutions are found where the graphs intersect each other, which is in 3 places. We are only worried about the x values here. It appears that they cross, on the far left, at x = -2, in the middle at x = .5, and on the far right at x = 3.5
Answer:
Let E be the event that the first marble selected is green. Let F be the event that the second marble selected is green. A box contains 20 blue marbles, 16 green marbles and 14 red marbles P(F/E)=15/49 because if the first marble selected is green there are 49 in total and 15 are green. I think this is it.
Step-by-step explanation: