Answer:
A. False
B. False
C. False
D. True
Step-by-step explanation:
A. False
Remember that E[aX+b] = aE[X] + b, therefore the equality would be true only if E[X] = 1.
B. False
Remember that
.
C. False
In other words they are telling you in words that
, that is false because ![V[X+b] = V[X]](https://tex.z-dn.net/?f=V%5BX%2Bb%5D%20%3D%20V%5BX%5D)
D. True
That is a property of the expected value E[X+b] = E[X]+b
Answer:
![3.84\times10^8\ m](https://tex.z-dn.net/?f=3.84%5Ctimes10%5E8%5C%20m)
Step-by-step explanation:
It is given that,
The average distance between the Earth and the Moon is 384 400 km.
We need to express in in standard form.
1 km = 1000 m
It means,
384400 km = 384400000 km
or
= ![3.84\times10^8\ m](https://tex.z-dn.net/?f=3.84%5Ctimes10%5E8%5C%20m)
Hence, the average distance between the Earth and the Moon is
.
Answer:
![\frac{1}{2}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%7D)
Step-by-step explanation:
![\frac{5}{8}-\frac{1}{8}\\ \\ \frac{5-1}{8}\\ \\\frac{4}{8}\\ \\\frac{1*4}{2*4}\\ \\\frac{1}{2}](https://tex.z-dn.net/?f=%5Cfrac%7B5%7D%7B8%7D-%5Cfrac%7B1%7D%7B8%7D%5C%5C%20%5C%5C%20%5Cfrac%7B5-1%7D%7B8%7D%5C%5C%20%5C%5C%5Cfrac%7B4%7D%7B8%7D%5C%5C%20%5C%5C%5Cfrac%7B1%2A4%7D%7B2%2A4%7D%5C%5C%20%5C%5C%5Cfrac%7B1%7D%7B2%7D)
If the question is asking what the equation is when the slope is 5 then the equation will be y=5x-4 since the stem of the equation is going to be y=mx+b, m is the slope and b is the y intercept