Answer:
D
Step-by-step explanation:
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The new mean age will be greater than 14.2 years because the teacher is older than the previous mean.
Answer:
Fraction: x = 247/21
Decimal: 11.76
Mixed Number: 11 16/21
Step-by-step explanation:
Brainliest Please!!
Answer:
The cost of one adult ticket is $13, and the price of one student ticket is $4.
Step-by-step explanation:
This question can be solved using a system of equations.
I am going to say that:
x is the cost of an adult ticket
y is the cost of a student ticket.
6 adult tickets and 1 student ticket for a total of $82
This means that
![6x + y = 82](https://tex.z-dn.net/?f=6x%20%2B%20y%20%3D%2082)
![y = 82 - 6x](https://tex.z-dn.net/?f=y%20%3D%2082%20-%206x)
The school took in $51 on the second day by selling 3 adult tickets and 3 student tickets.
This means that
![3x + 3y = 51](https://tex.z-dn.net/?f=3x%20%2B%203y%20%3D%2051)
Simplifying by 3
![x + y = 17](https://tex.z-dn.net/?f=x%20%2B%20y%20%3D%2017)
Since ![y = 82 - 6x](https://tex.z-dn.net/?f=y%20%3D%2082%20-%206x)
![x + 82 - 6x = 17](https://tex.z-dn.net/?f=x%20%2B%2082%20-%206x%20%3D%2017)
![-5x = -65](https://tex.z-dn.net/?f=-5x%20%3D%20-65)
![5x = 65](https://tex.z-dn.net/?f=5x%20%3D%2065)
![x = \frac{65}{5} = 13](https://tex.z-dn.net/?f=x%20%3D%20%5Cfrac%7B65%7D%7B5%7D%20%3D%2013)
![y = 82 - 6x = 82 - 6*13 = 82-78 = 4](https://tex.z-dn.net/?f=y%20%3D%2082%20-%206x%20%3D%2082%20-%206%2A13%20%3D%2082-78%20%3D%204)
The cost of one adult ticket is $13, and the price of one student ticket is $4.