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:
what do u gotta do? pick which ones right
Step 3:
14/7x-6/3=5
2x-2=5
2x=5+2
2x=7
x=7/2
If you are adding the fractions themselves it would be 9/17. If the /'s are for division it's 0.53
Answer:
Step-by-step explanation:
By intersecting chords theorem:
