Answer: #1 his school is out
Step-by-step explanation: #2 bcuz all sides equal to 66cm.
Please mark me brainlest.✌✌
Which statement correctly describes these electric field lines?
Answer:
69 feet
Step-by-step explanation:
we have
![h(t)=-16t^{2}+64t+5](https://tex.z-dn.net/?f=h%28t%29%3D-16t%5E%7B2%7D%2B64t%2B5)
where
h(t) is the height of the ball
t is the time in seconds
we know that the given equation is a vertical parabola open downward
The vertex is the maximum
so
the y-coordinate of the vertex represent the maximum height of the ball
Convert the quadratic equation into vertex form
The equation in vertex form is equal to
![y=(x-h)^{2}+k](https://tex.z-dn.net/?f=y%3D%28x-h%29%5E%7B2%7D%2Bk)
where
(h,k) is the vertex of the parabola
![h(t)=-16t^{2}+64t+5](https://tex.z-dn.net/?f=h%28t%29%3D-16t%5E%7B2%7D%2B64t%2B5)
![h(t)-5=-16t^{2}+64t](https://tex.z-dn.net/?f=h%28t%29-5%3D-16t%5E%7B2%7D%2B64t)
![h(t)-5=-16(t^{2}-4t)](https://tex.z-dn.net/?f=h%28t%29-5%3D-16%28t%5E%7B2%7D-4t%29)
![h(t)-5-64=-16(t^{2}-4t+4)](https://tex.z-dn.net/?f=h%28t%29-5-64%3D-16%28t%5E%7B2%7D-4t%2B4%29)
![h(t)-69=-16(t^{2}-4t+4)](https://tex.z-dn.net/?f=h%28t%29-69%3D-16%28t%5E%7B2%7D-4t%2B4%29)
![h(t)-69=-16(t-2)^{2}](https://tex.z-dn.net/?f=h%28t%29-69%3D-16%28t-2%29%5E%7B2%7D)
![h(t)=-16(t-2)^{2}+69](https://tex.z-dn.net/?f=h%28t%29%3D-16%28t-2%29%5E%7B2%7D%2B69)
the vertex is the point (2,69)
therefore
The maximum height is 69 ft
Answer:
$3190.00
Step-by-step explanation: