1/3b-1/3
factor out 1/3
1/3(b-1)
hope this helps
Answer:
And if we solve for a we got
So the value of height that separates the bottom 20% of data from the top 80% is 23.432.
Step-by-step explanation:
Let X the random variable that represent the heights of a population, and for this case we know the distribution for X is given by:
Where
and
For this part we want to find a value a, such that we satisfy this condition:
(a)
(b)
As we can see on the figure attached the z value that satisfy the condition with 0.20 of the area on the left and 0.80 of the area on the right it's z=-0.842
If we use condition (b) from previous we have this:
But we know which value of z satisfy the previous equation so then we can do this:
And if we solve for a we got
So the value of height that separates the bottom 20% of data from the top 80% is 23.432.
36 divided by 4 = 9
so then you take 3 times 9 which is 27 so the answer is
g=27
Volume: length*width*height
This problem gives you the three dimensions you need, so…
Multiply: 1 3/4* 1 3/4* 2 1/4
Which equals:
6 57/64 cubic feet
The answer to this i believe would be B