Answer:
After 3 seconds
Step-by-step explanation:
Given
![h(t) = -16t^2 + 96t](https://tex.z-dn.net/?f=h%28t%29%20%3D%20-16t%5E2%20%2B%2096t)
Required
Seconds to attain maximum height
The maximum of a quadratic function
is calculated using:
![x = -\frac{b}{2a}](https://tex.z-dn.net/?f=x%20%3D%20-%5Cfrac%7Bb%7D%7B2a%7D)
So, we have:
![t = -\frac{b}{2a}](https://tex.z-dn.net/?f=t%20%3D%20-%5Cfrac%7Bb%7D%7B2a%7D)
Where:
and ![b = 96](https://tex.z-dn.net/?f=b%20%3D%2096)
So:
![t = -\frac{96}{2 * -16}](https://tex.z-dn.net/?f=t%20%3D%20-%5Cfrac%7B96%7D%7B2%20%2A%20-16%7D)
![t = -\frac{96}{-32}](https://tex.z-dn.net/?f=t%20%3D%20-%5Cfrac%7B96%7D%7B-32%7D)
Cancel out negatives
![t = \frac{96}{32}](https://tex.z-dn.net/?f=t%20%3D%20%5Cfrac%7B96%7D%7B32%7D)
![t = 3](https://tex.z-dn.net/?f=t%20%3D%203)
<span>If the radius of a circle is doubled in length, the circumference of the circle is <span>B. doubled.
</span>C = 2</span><span>πr - this is the equation for circle. So if you double the radius, its circumference also doubles.</span>
<span>
</span>
Answer:
Step-by-step explanation:
You will eliminate y because 3y-3y=0
Answer:
(2, -2.5)
Step-by-step explanation:
4 to -9= 13 spaces
13/2=6.5
4-6.5=-2.5