I believe that it is 1. 20 degrees and 2. 80 degrees
Answer: 387.9 m
Step-by-step explanation:
Volume of a Sphere:
V=\frac{4}{3}\pi r^3
V=
3
4
πr
3
\text{radius} = 5.7
radius=5.7
meters
\text{Plug in:}
Plug in:
\frac{4}{3}\pi (5.7)^3
3
4
π(5.7)
3
775.734624395
775.734624395
Use calculator
\text{Volume of Hemisphere HALF of Volume of Sphere:}
Volume of Hemisphere HALF of Volume of Sphere:
\frac{775.734624395}{2}
2
775.734624395
Divide volume by 2
387.867312198
387.867312198
\approx 387.9\text{ m}^3
≈387.9 m
3
Answer:
The correct answer is B) 18%
Step-by-step explanation:
Note that the vaccine is already and is 80% effective. This means that if the entire population was administered with the vaccine, only 8/10 would gain immunity leaving 2/10 or 0.2 exposed.
If the new vaccine, therefore, is supposed to be 90% effective, it is only pragmatic to administer it against those who do not have immunity which is 0.2 of the existing population.
So to get the percentage that will develop immunity, we have:
0.2 x 0.9 = 0.18 or 18%
Cheers!
Answer:
210 divided 2 1/2= 84....
