Answer:
radius is 4 height is 10 volume is 167.55
Step-by-step explanation:
Answer:
Step-by-step explanation:
100 - 12 = 88
88:100
22:25
The answer is 3 because the order of operations tells you to start off with parenthesis first, which would (I assume would anyways) be 15. Then you would do 45÷15, which is 3.
Answer:
(a)

(b)
-1
(c)
30
Step-by-step explanation:
(a)
Your random variable will have two possible values, 30 and 0, one of them with a probability of 0.45 and the other one with a probability of 0.55. Therefore it looks like this.

(b)
The expected value of this PMF would be
therefore on average you will have a dollar less.
(c)
For this one, if you play 20 times and your initial amount is 50$ then you have to compute the following expectation.
![E[50+20*X] = 50+20*E[X] = 50-20 = 30](https://tex.z-dn.net/?f=E%5B50%2B20%2AX%5D%20%3D%2050%2B20%2AE%5BX%5D%20%3D%2050-20%20%3D%2030)