You are suppose to subtract making it
X+7=13
-7=-7
______
X=6
To find it it is
ax^2+bx+c
if the first term (a) is 1 then c=b/2
b=-1/4
(-1/4)/2=-1/4 times 1/2=-1/8
k=-1/8
The volume of the room is: 1840 ft^3
Step-by-step explanation:
The volume is the capacity of a given figure.
Given
Width = w = 23 feet
Depth = d = 10 feet
Height = h = 8 feet
The formula for volume is:
![V = W*D*H\\= 23*10*8\\=1840\ ft^3](https://tex.z-dn.net/?f=V%20%3D%20W%2AD%2AH%5C%5C%3D%2023%2A10%2A8%5C%5C%3D1840%5C%20ft%5E3)
The volume of the room is: 1840 ft^3
Keywords: Volume, Box
Learn more about volume at:
#LearnwithBrainly
Answer: ![(-9, 16]](https://tex.z-dn.net/?f=%28-9%2C%2016%5D)
This is the interval from -9 to 16. Exclude -9 but include 16.
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Work Shown:
The idea is to multiply all sides by 5, then add 1 to all sides
![-2 < x \le 3](https://tex.z-dn.net/?f=-2%20%3C%20x%20%5Cle%203)
![5(-2) < 5x \le 5(3)](https://tex.z-dn.net/?f=5%28-2%29%20%3C%205x%20%5Cle%205%283%29)
![-10 < 5x \le 15](https://tex.z-dn.net/?f=-10%20%3C%205x%20%5Cle%2015)
![-10+1 < 5x+1 \le 15+1](https://tex.z-dn.net/?f=-10%2B1%20%3C%205x%2B1%20%5Cle%2015%2B1)
![-9 < 5x+1 \le 16](https://tex.z-dn.net/?f=-9%20%3C%205x%2B1%20%5Cle%2016)
This converts to the interval notation ![(-9, 16]](https://tex.z-dn.net/?f=%28-9%2C%2016%5D)
note: a curved parenthesis means "do not include this value in the solution set"; while a square bracket has us include the value. So we exclude -9 and include 16.