The vertex of the given parabola is the point (3, 25).
<h3>
How to get the vertex of the parabola?</h3>
If the parabola has roots x₁ and x₂, then the vertex of the parabola is at:
xₙ = (x₁ + x₂)/2
Here the parabola is:
y = (-2 - x)*(x - 8)
We can rewrite that to:
y = -(x + 2)*(x - 8)
Then the two roots are:
x = -2 and x = 8
Then the vertex is at:
xₙ = (8 - 2)/2 = 6/2 = 3
To get the y-value of the vertex, we evaluate the equation in x = 3:
y = -(3+ 2)*(3 - 8) = -5*(-5) = 25
The vertex is (3, 25).
If you want to learn more about parabolas:
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Answer:
£36 : £96
Step-by-step explanation:
3 + 8 = 11
132 ÷ 11 = 12
⇒ 12 x 3 : 12 x 8
⇒ £36 : £96
30/m would best describe situation D. Rosie has paid $30. Dividing it by <em>m</em> would mean she wants to know how many she can get out of that $30, which would imply she doesn't know how many classes she's bought.
(a) If
are mutually exclusive, then

so we have

(b) If
are mutually independent, then




so that



The anwser is x=20 because you need x alone