Answer:
For k = 6 or k = -6, the equation will have exactly one solution.
Step-by-step explanation:
Given a second order polynomial expressed by the following equation:
.
This polynomial has roots
such that
, given by the following formulas:



If
, the equation has only one solution.
In this problem, we have that:

So




We will only have one solution if
. So





For k = 6 or k = -6, the equation will have exactly one solution.
I’ll try my best but sorry if I can’t help a lot I’m not the best at math
B. because 15 is not equal too 10
Table
<span> In favor Opposed Undecided
Grade 9 5 3 9
Grade 10 8 12 9
Grade 11 15 16 10
Grade 12 12 6 11
Probability = number of positive outcomes / number of possible outcomes
Probability that a student in grade 9 is in favor of extending the school day =
number of students in 9 grade in favor / number of students in grade 9
number of students in 9 grade in favor = 5
number of students in 9 grade = 5 + 3 + 9 = 17
Probability = 5 / 17
Answer: 5 / 17
</span>
Answer: 19
Step by step:
15-(-4)
Negative* negative= positive
So.. negative 1 times -4=4
15+4= 19