Answer: An ostrich can walk with a speed of 2 miles per hour.
Step-by-step explanation:
Speed of roadrunner bird=14 miles per hour
Let x be the speed of ostrich egg.
Given that : A the greater roadrunner bird can run 7 times faster than an ostrich can walk.
⇒ Speed of roadrunner bird=7x
⇒7x= 14 miles per hour.
Therefore, speed of ostrich egg=2 miles per hour.
Answer:
Step-by-step explanation:
We want to find the equation of the parabola with a focus of and directrix
.
Considering the directrix, the quadratic graph must open downwards.
The equation of this parabola is given by the formula,
, where
is the vertex of the parabola.
The axis of this parabola meets the directrix at .
Since the vertex is the midpoint of the focus and the point of intersection of the axis of the parabola and the directrix,
and
.
The equation of the parabola now becomes,
.
Also is the distance between the vertex and the directrix.
This implies that .
Since the parabola turns downwards,
.
Our equation now becomes,
.
.
We make y the subject to get,
.
This is the same as
.
