Substitute the values for a, b, and cinto b2 - 4ac to determine the discriminant. Which quadratic equations will have two real number solutions? (The related quadratic function will have two x-intercepts.) Check all that apply.
90=232 - 7x-9
0=x2 - 4x +4
0 0=4x2 – 3x - 1
0=x2-2x-8
D 0=332 + 5x +3

well kind of. you get friend requests. and you can accept them or not so yes.

step-by-step explanation:

in counting the number of heads in 4 coin flips, the probability that we get exactly one head is the probability that we get anyone of the following 4 outcomes: httt, thtt, ttht, or ttth. each has probability 1/16, so the probability to get exactly one head in 4 flips is 1/16 + 1/16 + 1/16 + 1/16 = 4/16 = 1/4.