It would take 12 hours to drive 804 miles. If you need this, they're going 67 miles per hour.
Answer:
radius = 6.5
<OAC = 67.38 degrees
Step-by-step explanation:
It looks like you are assuming 0 is on AB and in fact defines the circumradius of the circle. Further you are assuming (I think) that ABC is a right angle triangle.
Therefore AB^2 = AC^2 + BC^2
AB^2 = 5^2 + 12^2
AB^2 = 25 + 144
AB^2 = 169
AB = 13
AO is therefore 1/2 of 13 = 6.5.
CO is also 6.5 since all radii are equal.
I don't know if you know this but the only way you can solve this is to use the Cosine Law for distance.
- AC = 5
- OC = 6.5
- OA = 6.5
- <CAO = ??
CO^2 = OA^2 + CA^2 - 2*OA*CA*Cos(<CAO)
6.5^2 = 6.5^2 + 5^2 - 2*5*6.5*Cos(<CAO)
42.25 = 42.25 + 25 - 65*Cos(<CAO)
0 = +25 - 65*Cos(<CAO)
-25 = -65*Cos(<CAO)
0.3846 = Cos(<CAO)
<CAO = cos-1(0.3846)
<CAO = 67.38 degrees.
Answer:
a)
Therefore to compare this data effectively using the rates per driver is better off like for people who do not smoke their rate will be = 59 / 452 = 13.1% while for smokers of 61+ times = 50 / 156 = 32.1% and this rate will show clearly tat more accidents where caused by people who smoked 51+ times hence it should be used for graphical representation
b) attached below
Step-by-step explanation:
A) A useful graph is must compare rates rather than counts of accidents in the four marijuana use classes
Using the rates on a graph is better for reference like saying; that 50 crashes were caused by those who smoke 51+ times and 59 crashes is caused by those who never smoke this statistics makes it seem like smoking has no effect on the amount of accidents
Therefore to compare this data effectively using the rates per driver is better off like for people who do not smoke their rate will be = 59 / 452 = 13.1% while for smokers of 61+ times = 50 / 156 = 32.1% and this rate will show clearly tat more accidents where caused by people who smoked 51+ times hence it should be used for graphical representation
B) accident rate for Non-smokers
= (59/452) * 100 = 13.05
accident rate for smokers between 1-10 times
= ( 36/ 229 ) * 100 = 15.72
accidents rate for smokers between 11 - 50 times
= ( 15/50 ) * 100 = 21.42
accidents rate for smokers 51+
= ( 50 / 156 ) * 100 = 32.05
attached below is the required graph