Answer:
The correct answer is - 17.
Step-by-step explanation:
Given:
total students = 219
in chemistry = 112
in physics = 45
not enrolled in either of these = 79
solution:
The number of students in both classes can be calculated by
P ( A or B) = P (A) + P (B) - P (A and B)
then putting and solving the given vaues in formula
=> (219-79) = 112+45-x
=> 140 = 157 -x
=> 17 = x
Perimeter is all the sides added together so 5.50 + 12 + 5.50 + 12 = 35 and area is base times height so 5.5 × 12 = 66
P = 35m
A = 66m
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:
the volume of the rectangular prism = 166.336 cubic cm
Hence, option C is correct.
Step-by-step explanation:
We can determine the volume of the rectangular prism using the formula given below.
The volume of the rectangular prism = Base area x Height
<u><em>Determining the Base area:</em></u>
Given
Area of the Base area = l × w
= 3.2 × 4.6
= 14.72 cm²
Thus, the area of the Base area = 14.72 cm²
As the height h = 11.3 cm
Thus,
The volume of the rectangular prism = Base area x Height
= 14.72 x 11.3
= 166.336 cubic cm
Therefore, the volume of the rectangular prism = 166.336 cubic cm
Hence, option C is correct.
Answer:
4/9
Step-by-step explanation:
8/2=4
18/2= 9
