4.00 - 3.65 = 0.35....so she saves 35 cents on each motivator
with 220 motivators...
0.35(220) = $ 77 <== what she saves
Answer:
1/7 ;
0.0034
Step-by-step explanation:
Given that:
X = 1/14, 1/7, 3/14
n = number of observations = 3
Since, probability of X is equally likely ;
P(X) = Σp(x) = 1 ; p(x) = 1/n = 1/3
The mean, m ;
Σx*p(x) = (1/3 * 1/14) + (1/3 * 1/7) + (1/3 * 3/14)
= 1/42 + 1/21 + 3/42
= (1 + 2 + 3) / 42
= 6 / 42
= 1/7
The variance :
Σx²*p(x) - m²
((1/3) * (1/14)^2) + ((1/3) * (1/7)^2) + ((1/3) * (3/14)^2) - (1/7)^2
= 0.0238095 - 0.0204081
= 0.0034014
= 0.0034
Honestly I think you are correct, not trying to take your point. :)
<h3>
Answer:</h3>
C. No, the graph fails the vertical line test
<h3>
Step-by-step explanation:</h3>
Functions describe the relationship between the dependent variable, y, and the independent variable, x.
Functions
For a graph to be a function, x-values cannot repeat. This means that one x-value cannot have more than one y-value.
However, functions can have repeating y-values. So, y-values can have more than one x-value; as seen in quadratic functions. This means that answer B cannot be correct.
Vertical Line Test
The vertical line test is a way to determine if a graph is a function. A graph passes the vertical line test if you can draw a vertical line at every point on the coordinate plane and not have it intersect with the graph more than once.
On the graph in the question, a vertical line would intersect with the graph twice at the x-values greater than -1. Since the graph fails the vertical line test, it is not a function.
