Answer:its option a
Step-by-step explanation: the distance formula is y sub 1 minus y sub 2
And x sub 1 minus y sub 2
Answer:
D
Step-by-step explanation:
a,c,d are same but b is different.
Given:
The given equation is
To find:
The vertex, focus, and directrix.
Solution:
The equation of a parabola is
...(i)
where, (h,k) is vertex, 
and directrix is 
We have,
It can be written as
...(ii)
On comparing (i) and (ii), we get
Vertex of the parabola is (2,3).
Therefore, the focus of the parabola is 
.
Directrix of the parabola is
Therefore, the directrix of the parabola is .
Answer:
The
90
adult tickets sold were
45
%
of the
200
tickets sold to the concert.
Explanation:
Since
90
tickets out of
200
were adult tickets, the percentage (represented as
x
) can be calculated by this equation:
200
×
x
100
=
90
2
200
×
x
100
=
90
2
x
=
90
Divide both sides by
2
.
x
=
45
Step-by-step explanation:
