Good evening ,
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Answer:
f(4y) = -8y - 3.
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Step-by-step explanation:
f(x) = -2x-3 Then f(4y) = -2(4y) -3 = -8y - 3.
:)
let us repersent the number of student tickets, then 's + 20' is repersenting the number of adult tickets.
The equation for the total tickets can be experssed as the following:
4.00 * s + 8.00 * ( s + 20 ) = 880.00
solving for 's=60', there were 60 student tickets.
60 + 20 = 80
there were 80 adult tickets.
Hope helps!-Aparri
Not very much because things don't always happen the way we want them too
Answer:
The mean is 11.5 minutes and the standard deviation is of 6.64 minutes
Step-by-step explanation:
An uniform probability is a case of probability in which each outcome is equally as likely.
For this situation, we have a lower limit of the distribution that we call a and an upper limit that we call b.
The mean is:
![M = \frac{a+b}{2}](https://tex.z-dn.net/?f=M%20%3D%20%5Cfrac%7Ba%2Bb%7D%7B2%7D)
The standard deviation is:
![S = \sqrt{\frac{(b-a)^{2}}{12}}](https://tex.z-dn.net/?f=S%20%3D%20%5Csqrt%7B%5Cfrac%7B%28b-a%29%5E%7B2%7D%7D%7B12%7D%7D)
Arrival time of 9:18 am and a late arrival time of 9:41 am.
9:41 is 23 minutes from 9:18. So the time is uniformily distributed between 0 and 23 minutes, so a = 0, b = 23.
Mean:
![M = \frac{a+b}{2} = \frac{0+23}{2} = 11.5](https://tex.z-dn.net/?f=M%20%3D%20%5Cfrac%7Ba%2Bb%7D%7B2%7D%20%3D%20%5Cfrac%7B0%2B23%7D%7B2%7D%20%3D%2011.5)
Standard deviation:
![S = \sqrt{\frac{(b-a)^{2}}{12}} = \sqrt{\frac{(23 - 0)^{2}}{12}} = 6.64](https://tex.z-dn.net/?f=S%20%3D%20%5Csqrt%7B%5Cfrac%7B%28b-a%29%5E%7B2%7D%7D%7B12%7D%7D%20%3D%20%5Csqrt%7B%5Cfrac%7B%2823%20-%200%29%5E%7B2%7D%7D%7B12%7D%7D%20%3D%206.64)
The mean is 11.5 minutes and the standard deviation is of 6.64 minutes
15 I helped someone with this question already so I know its right