To find the mean all you have to do is add all the numbers...
you should get -30
and divide by a number of numbers, there are 6
so -30/6 is -5
Answer:
The square root of 476 is 21.8
Answer: ![312 ft^{2}](https://tex.z-dn.net/?f=312%20ft%5E%7B2%7D)
Step-by-step explanation:
Area of Rectangle = bh = 16 ft x 18 ft = 288 ![ft^{2}](https://tex.z-dn.net/?f=ft%5E%7B2%7D)
Area of Triangle = 1/2 bh = 1/2 x (16-12) ft x (6) ft x 2 (There's 2 triangles) = 24 ![ft^{2}](https://tex.z-dn.net/?f=ft%5E%7B2%7D)
24 ft^2 + 288 ft^2 = 312 ft^2
Given:
Jeffery babysits for 4 dollars per hour and works as a math tutor for 7 dollars per hour.
He is only allowed to work 13 hours total per week.
He wants to make at least 65 dollars.
To find:
The system of inequalities to represent this situation.
Solution:
Let x be the number of hours he babysits per week and y be the number of hours h works as a math tutor.
He is only allowed to work 13 hours total per week. It means sum of x and y must be less than or equal to 13.
![x+y\leq 13](https://tex.z-dn.net/?f=x%2By%5Cleq%2013)
He wants to make at least 65 dollars. It means total earnings must be greater than or equal to 65.
![4x+7y\geq 65](https://tex.z-dn.net/?f=4x%2B7y%5Cgeq%2065)
Number of hours can not be negative.
.
Therefore, the required system of inequalities contains some equations,
and
.