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BaLLatris [955]
3 years ago
6

The equation of the parabola is (y-1)^2 = 16(x+3)

Mathematics
1 answer:
Mandarinka [93]3 years ago
5 0
We know that 

if  the y terms is squared so it opens left or right

Is a Horizontal Parabola, the equation is of the form
(y-k)²=4(p)(x-h)
vertex is (h,k)
and
p is distance from focus to vertex, also distance from vertex to directrix
if p>0, then it opens to the right and directrix is to the left of vertex
if p<0, then it opens to the left and directrix is to the right of vertex

so
(y-1)²=4(4)(x-(-3))
vertex is (-3,1)
4>0 so directrix is to left of vertex
left is in x direction
-3-4=-7
directrix is x=-7

the answer is
x=-7

see the attached figure

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Leto [7]

Area inside the semi-circle and outside the triangle is  (91.125π - 120) in²

Solution:

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Using Pythagoras theorem,

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2 years ago
What is 2.3w-7+8.1-3w
stepan [7]
2.0 w-1.1
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