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ewymer3901
29.01.2021 •
Mathematics
NEED ANSWER FAST! Given that ∆DAE~∆BAC, what is the length of AE?
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Ответ:
12
Step-by-step explanation:
8 divided by 2 is 4, so I multiplide 6 x 2 and got 12.
Ответ:
Part A) The vertex is the point![(-1,0)](/tpl/images/0360/3765/3f9e9.png)
Part B) The axis of symmetry is![x=-1](/tpl/images/0360/3765/66413.png)
Part C)![c=0,c=4](/tpl/images/0360/3765/81e37.png)
Step-by-step explanation:
Part 1)
we know that
The equation of a vertical parabola into vertex form is equal to
where
(h,k) is the vertex of the parabola
and the axis of symmetry is equal to the x-coordinate of the vertex
so
In this problem we have
Convert to vertex form
Group terms that contain the same variable, and move the constant to the opposite side of the equation
Complete the square. Remember to balance the equation by adding the same constants to each side
Rewrite as perfect squares
The vertex of the parabola is the point![(-1,0)](/tpl/images/0360/3765/3f9e9.png)
Is a vertical parabola open downward
The axis of symmetry is equal to
see the attached figure to better understand the problem
Part 2) Solve the equation by factoring.
we have
Factor c
so
and
The solutions are