Answer:
Your answer would be 7!
Step-by-step explanation:
Hopefully am i right tell me if I'm wrong tho <3
Answer:
D. x ≥ -13/2 or x < -41/6
Step-by-step explanation:
- 5/2+x ≥ 1/3 ⇒ x ≥ 1/3 -5/2 ⇒ x ≥ - 13/2
or
- x+2 < -29/6 ⇒ x < -29/6 - 2 ⇒ x < -41/6
So combined the answer is:
Option D is correct
Answer:
ok does that mean me dont get brainliest
Step-by-step explanation:
Answer:
6 inches
Step-by-step explanation:
Formula for surface area of a cylinder:
![SA=2\pi r^{2} +2\pi rh](https://tex.z-dn.net/?f=SA%3D2%5Cpi%20r%5E%7B2%7D%20%2B2%5Cpi%20rh)
Plug in values and solve for the radius:
![180\pi =2\pi r^{2} +2\pi r(9)\\](https://tex.z-dn.net/?f=180%5Cpi%20%3D2%5Cpi%20r%5E%7B2%7D%20%2B2%5Cpi%20r%289%29%5C%5C)
Divide both sides by ![2\pi](https://tex.z-dn.net/?f=2%5Cpi)
![90=r^{2} +r(9)](https://tex.z-dn.net/?f=90%3Dr%5E%7B2%7D%20%2Br%289%29)
Subtract 90 from both sides
![0=r^{2} +9r-90](https://tex.z-dn.net/?f=0%3Dr%5E%7B2%7D%20%2B9r-90)
Use the quadratic equation to find the roots
±
(sorry for formatting, Brainly doesn't
allow equations with ± in them)
and ![x=\frac{-9-\sqrt{9^2-4*1*90} }{2(1)}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B-9-%5Csqrt%7B9%5E2-4%2A1%2A90%7D%20%7D%7B2%281%29%7D)
and ![x=\frac{(-9-\sqrt{81+360})}{2}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B%28-9-%5Csqrt%7B81%2B360%7D%29%7D%7B2%7D)
and ![x=\frac{(-9-\sqrt{441})}{2}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B%28-9-%5Csqrt%7B441%7D%29%7D%7B2%7D)
and ![x=\frac{(-9-21)}{2}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B%28-9-21%29%7D%7B2%7D)
and ![x=\frac{-30}{2}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B-30%7D%7B2%7D)
and
We can't have a negative radius, so that leaves us with r=6 in.
The answer is C. The only choice that is greater than 36.2 is 36.212, which is C.