2/12+4/12+1/12= 7/12, 12-7 = 5, so 5/12 participate in the volunteer programs.
Answer:
about 14.9%
Step-by-step explanation:
Percent change can be computed using the formula ...
percent change = ((new value)/(old value) -1) × 100%
For the given numbers, this is ...
percent change = (45.95/54.00 -1) × 100% ≈ -14.907%
The discount is about 14.9%.
_____
Computed this way, the sign of the percentage change is negative for a decrease (discount), and positive for an increase.
Answer:
P (She selects the route of four specific capitals) = 
D. No,it is not practical to list all of the different possible routes because the number of possible permutations is very large.
Step-by-step explanation:
Let's start assuming that each route is equally likely to be chosen.
Assuming this, we can calculate P(A) where the event A is ''She selects the route of four specific capitals'' doing the following :
P(A) = Favourable cases in which the route of four specific capitals is selected / Total number of ways in 4 of 42 states
The favourable cases in which the route of four specific capitals is selected is equal to 1 .
For the denominator we need the permutation number of 4 in 42.
The permutation number is defined as :


The probability of event A is : 
Finally for the other question : The option D is the correct because the number of possible permutations is 2686320 and is very large to be listed.