B because you don’t multiply the denominator, so you mulitply the top by 5, to get 15 and put it over 8. so 15/8
Answer:
A) y = 3(x -3)^2 -46
B) (3, -46)
C) look at the y-coordinate of the vertex
Step-by-step explanation:
A) Factor the leading coefficient from the variable terms.
y = 3(x^2 -6x) -19
Inside parentheses, add the square of half the x-coefficient. Outside, subtract the same value.
y = 3(x^2 -6x +9) -19 -3(9)
y = 3(x -3)^2 -46
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B) Compared to the vertex form, ...
y = a(x -h)^2 +k
we find a=3, (h, k) = (3, -46).
The vertex is (3, -46).
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C) The vertex is an extreme value (as is any vertex). The sign of the leading coefficient tells you whether the parabola opens upward (+) or downward (-). This parabola opens upward, so the vertex is a minimum.
If the leading coefficient is positive, the y-coordinate of the vertex is a minimum. If the leading coefficient is negative, the y-coordinate of the vertex is a maximum.
Step-by-step explanation:
Answer:
The length of the ladder is 9.2 meters
Step-by-step explanation:
Given as :
The angels of elevation of a ladder against a wall = 60°
The Distance of the foot of the ladder fro the wall = d = 4.6 meters
Let The length of the ladder = h meters
<u>Now, According to question</u>
cos angle = 
Or, cos 60° = 
Or, 0.5 = 
∴ h = 
i.e h = 9.2
So,The length of the ladder = h = 9.2 meters
Hence The length of the ladder is 9.2 meters Answer
Step-by-step explanation:
The equation of line which passes through these points is determined by:
p(x1,y1)=(-1/2,4) p(x2,y2)=(1/2,6)

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