3 less than -5 times a number x is the same as -18
1 answer:
You might be interested in
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.