Answer: The correct answer is C
-1/4r+6p
Step-by-step explanation:
I think the answer is 32.
Answer:
Relative frequency:

The most serious threat to aviation safety is, according to this data, "mechanical failures". It can be improved by more rigorous inspection and better maintenance policies and execution.
Step-by-step explanation:
We have the data for fatal plane crashes. The sum of plane crashes is
We can calculate the relative frequency as:

We can see that the most frequent cause is "mechanical problems", with a relative frequency of 0.45.
The way to work out how many parts there are per shift would be as
follows: if there are 2 parts produced every second, this means there
are 120 produced every minute (60 times 2), and if you then multiply
this 120 again to work out how many parts are made in an hour you will
get 7,200. If you times this by 10 again you will get 72,000 parts made
in a 10 hour shift.