Answer:
--- Mean
--- Variance
--- Standard Deviation
Step-by-step explanation:
<em>See Comment for missing details</em>
Given
--- proportion
-- sample
Solving (a): The mean; E(x)
This is calculated as:
Substitute values for n and p
Solving (b): The variance; s^2
This is calculated as:
Substitute values for n and p
Solving (c): The standard deviation; s
This is calculated as:
Substitute value for s^2
Triangle SET is similar to triangle SAR, so corresponding sides have the same ratio. This means
... ST : SR = ET : AR = 8.19 : 6.37
Then ST : TR = 8.19 : (6.37+8.19) = 8.19 : 14.56
Using division symbols, this is
... ST/TR = 8.19/14.56
Multiplying by TR gives
... ST = TR×(8.19/14.56) = 20.8×8.19/14.56
... ST = 11.7
Answer:
-8/3
Step-by-step explanation:
The line intersects the point (1, 4). It also intersects the point (4,-4). Slope is rise over run. Between these two points, the rise is -8 (it decreases by 8) and the run is 3 (the x goes up from 1 to 4). Rise=-8 over Run=3 so -8/3. Hope this helps!
I believe you mean that x needs to be isolated?
First, divide both sides by a. You'll get Y/A = x+b. Then, subtract b from both sides, to get Y/A - B = X.
Or x= y/a - b.