Answer:
Step-by-step explanation:
d
Answer:
k = 12
Step-by-step explanation:
Given in the question,
Cost of the the movie tickets is proportional to the number of tickets sold.
Cost of movie tickets (C) ∝ number of tickets sold (T)
C ∝ T
C = kT
Here 'k' is a proportionality constant.
Since, line given in the graph passes through a point (5, 60)
60 = k(5)
k = ![\frac{60}{5}](https://tex.z-dn.net/?f=%5Cfrac%7B60%7D%7B5%7D)
k = 12
Therefore, value of proportionality constant is 12.
Answer:
3
Step-by-step explanation:
The first set is a function because each x-value has only one given y-value, the second funtion is a function because it is a quadratic equation, the third equation isn't a function because of the point of discontinuity at x=0 because of 1/0 being undefined, and the fourth equation is a linear function.
Answer:
48
Step-by-step explanation:
Given that:
![A \ score \ of \ 60 \ falls \ two \ standard \ deviations \ above \ the \ mean \\ \\ A \ score \ of \ 42 \ falls \ one \ standard \ deviation \ below \ the \ m ean](https://tex.z-dn.net/?f=A%20%20%5C%20score%20%20%5C%20of%20%5C%20%2060%20%20%5C%20falls%20%5C%20%20two%20%20%5C%20standard%20%20%20%5C%20deviations%20%5C%20%20above%20%5C%20%20the%20%5C%20mean%20%5C%5C%20%5C%5C%20A%20%5C%20%20score%20%5C%20of%20%5C%2042%20%20%5C%20falls%20%5C%20%20one%20%20%5C%20standard%20%20%5C%20deviation%20%5C%20below%20%20%5C%20the%20%5C%20m%20ean)
The interval for score = 60 - 42 = 18
If we divide it by the 3 standard deviations; the interval result into
= 18/3
= 6
So, the standard deviation is 6, and the mean = 42 + 6
= 48