Answer: 4/5
Step-by-step explanation:
--------------------------------No of vehicles involved
Did alcohol play a role - - 1 - - - - - 2 - - - - - 3
Yes---------------------------- 60 - - - - 110 - - - 30=200
No - - - - - - - - - - - - - - - - 40 - -- - 215 - - - 45 =300
- - - - - - - - - - - - - - - - - - 100 - - - - 325 - - - 75
What proportion of accidents involved more than one vehicle;
Total accident = (100 + 325 + 75) = 500
Number of accidents involving more than one vehicle = (accident involving 2 vehicles + accident involving 3 vehicles)
(325 + 75) = 400
Therefore, proportion of accidents involved more than one vehicle = (Accident involving more than one vehicle / total accidents)
= (400/ 500) = 4/5
Answer:
Options are not listed :/
Step-by-step explanation:
Answer:multiplication
Step-by-step explanation:
Answer:
First part:
Set h(t) = 231and solve for t.
-16t²+ 152t + 9= 231
-16t² + 152t - 222= 0
Solve this quadratic equation for t. You should get 2 positive solutions. The lower value is the time to reach 231 on the way up, and the higher value is the time to reach 231 again, on the way down.
Second part:
Set h(t) = 0 and solve the resulting quadratic equation for t. You should get a negative solution (which you can discard), and a positive solution. The latter is your answer.