Answer:
Step-by-step explanation: -b ± √(b² - 4ac)
Let's solve for x using the quadratic formula x = ------------------------
2a
In this case the coefficients are 2, -7 and 9, so the discriminant, b^2 - 4ac, is (-7)^2 - 4(2)(9), or 49 - 72 = -23.
The roots (zeros) of this quadratic are thus:
-(-7) ± i√23
x = ----------------------
4
or
7 ±i√23
x = -------------------
4
Answer:
24 ways
Step-by-step explanation:
Given that
Number of students = 4
Lecturer have to stand in the middle position.
We have five places in which middle place is for lecturer,now we have four places and we have to arrange four students on that four places.So there will 4! ways to arrange those students.
4!= 4 x 3 x 2 x 1
4! =24
So we have 24 ways to arrange 4 students and one lecturer .
Jjnjjnjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj
Answer:
Step-by-step explanation:
on the y axis, go up seven and dot it. then from there go up 3 and right 1 and plot a point. then draw a line through both dots
