Answer:
Option a) ![h=28\ cm](https://tex.z-dn.net/?f=h%3D28%5C%20cm)
Step-by-step explanation:
we know that
The volume of a cylinder is equal to
![V=\pi r^{2}h](https://tex.z-dn.net/?f=V%3D%5Cpi%20r%5E%7B2%7Dh)
we have
Note In this problem the volume is equal to
instead of ![847\ ml](https://tex.z-dn.net/?f=847%5C%20ml)
so
![847\pi\ ml=847\pi\ cm^{3}](https://tex.z-dn.net/?f=847%5Cpi%5C%20ml%3D847%5Cpi%5C%20cm%5E%7B3%7D)
![r=5.5\ cm](https://tex.z-dn.net/?f=r%3D5.5%5C%20cm)
substitute in the formula and solve for h
![847\pi=\pi(5.5)^{2}h](https://tex.z-dn.net/?f=847%5Cpi%3D%5Cpi%285.5%29%5E%7B2%7Dh)
simplify
![847=(5.5)^{2}h](https://tex.z-dn.net/?f=847%3D%285.5%29%5E%7B2%7Dh)
![h=847/(5.5)^{2}](https://tex.z-dn.net/?f=h%3D847%2F%285.5%29%5E%7B2%7D)
![h=28\ cm](https://tex.z-dn.net/?f=h%3D28%5C%20cm)
Circle equation: (x - h) + (x - k) = r²
(h, k) = center
r = radius
The center is (-7, 4)
To find the radius, take the square root of 49.
√49 = 7
The radius is 7.
Best of Luck!
Answer: A,C, and F
Step-by-step explanation:
Answer:
see explanation
Step-by-step explanation:
given a parabola in standard form : y = ax² + bx + c : a ≠ 0
• If a > 0 then parabola opens up
• If a < 0 then parabola opens down
given y = 4x² - 8x + 8 ← in standard form
with a = 4, b = - 8 and c = 8
here a > 0 then parabola opens up