Answer:
262 degrees
Step-by-step explanation:
Yea
Answer: $2.95
Step-by-step explanation:
Given: Probability of losing the $7 = ![\dfrac{20}{38}](https://tex.z-dn.net/?f=%5Cdfrac%7B20%7D%7B38%7D)
Probability of winning $14 = ![\dfrac{18}{38}](https://tex.z-dn.net/?f=%5Cdfrac%7B18%7D%7B38%7D)
Then, the expected value = (- $7) x ( Probability of losing the $7) + $14 x(Probability of winning $14)
= ![(-\$ 7)\times\dfrac{20}{38}+(\$14)\times\dfrac{18}{38}](https://tex.z-dn.net/?f=%28-%5C%24%207%29%5Ctimes%5Cdfrac%7B20%7D%7B38%7D%2B%28%5C%2414%29%5Ctimes%5Cdfrac%7B18%7D%7B38%7D)
= ![-\dfrac{70}{19}+\dfrac{126}{19}](https://tex.z-dn.net/?f=-%5Cdfrac%7B70%7D%7B19%7D%2B%5Cdfrac%7B126%7D%7B19%7D)
= ![\dfrac{56}{19}\times\approx\$2.95](https://tex.z-dn.net/?f=%5Cdfrac%7B56%7D%7B19%7D%5Ctimes%5Capprox%5C%242.95)
∴ If a doctor pays $7 that the outcome is an odd number, the doctor's
expected value is $2.95.
Answer:
5 (wait i screwed up) its 23
Step-by-step explanation:
According to the question statement, the total sum of students is 221, which includes the students that ride on bus and the students that ride in a van.
The students that ride in a van are five, the students that ride on bus are 6 times s which is the product of the number of buses and the number of students that are on each bus.
Write all this information into an equation, this way:
![6s+5=221](https://tex.z-dn.net/?f=6s%2B5%3D221)
Now, solve the equation for s to find the number of students that are on each bus.
![\begin{gathered} 6s+5=221 \\ 6s=216 \\ s=\frac{216}{6} \\ s=36 \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%206s%2B5%3D221%20%5C%5C%206s%3D216%20%5C%5C%20s%3D%5Cfrac%7B216%7D%7B6%7D%20%5C%5C%20s%3D36%20%5Cend%7Bgathered%7D)
There are 36 students on each bus.