8x - (5x + 4) ≥ -31
8x -5x - 4 ≥ -31
3x ≥ -31 + 4
3x ≥ -27
x ≥ - 9
Answer: a numbe line with a circle on - 9 and shading to the left.
Because that drawing represents the number that are less or equel than -9 and the answer is the numbers greater or equal than -9.
So you would add 12 to the other side of the equation, and 9+12=21, so x=21.
Answer:
<h2>288 ft³</h2>
Step-by-step explanation:
The formula of a volume of a prism:

where
<em>B</em><em> - area of a base</em>
<em>H</em><em> - height of a prism</em>
<em />
In the base we have the right treiangle. The formula of an area of a right triangle is:

where
<em>a, b</em><em> - are legs</em>
We have

Substitute:

Calculate the volume.
Substitute


Step-by-step explanation:
5x+23=0
5x=23
x=23-5
(x=7)