Answer:
The expected number of days until the prisoner reaches freedom is 2.8.
Step-by-step explanation:
Door 1: 0.3 probability of being selected. Leads to his cell after two days' travel.
Door 2: 0.5 probability of being selected. Leads to his cell after four days' travel.
Door 3: 0.2 probability of being selected. Leads to his cell after one day of travel.
What is the expected number of days until the prisoner reaches freedom?
We multiply the probability of each door being used by the time that it leads to the cell. So
E = 0.3*2 + 0.5*4 + 0.2*1 = 2.8
The expected number of days until the prisoner reaches freedom is 2.8.
Answer:
1. -5
2. -24
3. 0
Step-by-step explanation:
Sum means addition.
Product means multiplication.
A negative times a negative will give you a positive.
Anything times zero is zero.
1. -2 + 5 + (-8) = -5
2. -1 * -4 * -6 = -24
3. 10 * 0 *-9 = 0
Answer:
6x= -6
x= -1
Step-by-step explanation:
Common equation,6 instead of 0 equals to negative 6, then divide it by 6 equals to negative 1
Answer:
234 miles a day
Step-by-step explanation:
<em><u>The whole trip was for 2 weeks (7*2=14 days).</u></em>
<em><u>Since 1 day from each week they took rest, they drove for (14-2(1)=12 days) 12 days.</u></em>
So a total of 2808 for 12 days. The average is 2808 divided by 12 days:
The answer is 234 miles a day
