I think It’s 0.70 and in fraction is 512/729
To get the vertex of the parabola we proceed as follows;
y=-7(x-4)^2-5
The above can be written as:
y=-7x^2+56x-117
The values of a,b and c are:
a=-7, b=56 and c=-117
x=-b/(2a)
x=-56/(-7*2)=4
but;
y=-7x^2+56x-117
y=-7(4)^2+56(4)-117
y=-5
Thus;
x=4 and y=-5
The vertex will be at point (4,-5)
Answer:
I believe you are correct
Hope This Helps! Have A Nice Day!!
This comes from subtracting 4 from both sides.
I'm pretty sure it's 27.25 because 109 ÷ 4= 27.25
