Subtract 7 both sides 
Subtract 9x both side 
They cancel out 
At the end you divide it
I don’t have access to paper right now sorry
        
                    
             
        
        
        
Answer: a = 8
Step-by-step explanation:
Volume of a square based pyramid is given as
 .
 .
where a is the length of the side and h is the height.
Substituting into the formula , we have
 V = 
128 =  /3
 /3
384=  X 6
 X 6
Divide through by 6
384/6 = 
64 = 
Therefore :
a = 
a = 8
 
        
             
        
        
        
<em>*To solve an inequality, it's the same as solving an equation; isolate the variable to one side.</em>
For this, all you need to do is divide both sides by -4. And since we are dividing by a <u>negative</u>, flip the inequality sign and your inequality is 
Now to graph this. Since x can be "equal to" 1/4 ( ≤ = less than or equal to), you will have a <u>closed circle on 1/4.</u> And since x can also be "less than" 1/4, <u>the arrow will be going to the left of 1/4.</u>
 
        
                    
             
        
        
        
Answer:
I may not be correct, depending on what you were taught, but it would be...
17/30
Step-by-step explanation:
(2/5×6/6)+(1/6×5/5) 
12/30 + 5/30
17/30 
keep in mind you don't add the denominators at all ( the numbers at the bottom half of the fraction)