Answer:
The answer is -6 but its not in the option
Step-by-step explanation:

Let x = -5
[(-5)²-1]/(-5+1)
= (25-1)/(-4)
= 24/-4
= -6
 
        
             
        
        
        
The second to last one, looks like a really tall speed bump
        
             
        
        
        
I'm not sure what side is missing but you could use the proportions
A/B=X/Y or B/C=Y/Z or CA/=ZX. it also works if you reverse this for example B/A=Y/X
        
                    
             
        
        
        
Inequalities are used to show the relationship between unequal expressions.
The inequalities that represent the maximum weights are:
- <em>2 axles - </em> <em>.</em> <em>.</em>
- <em>3 axles - </em> <em>.</em> <em>.</em>
- <em>4 axles - </em> <em>.</em> <em>.</em>
<em />
Let the maximum weight be represented with x
In inequality, maximum means less than or equal to i.e. 
<u>(a) 2 axles</u>
The maximum weight, here is 40000.
So, the inequality is:

<u>(b) 3 axles</u>
The maximum weight, here is 60000.
So, the inequality is:

<u>(c) 4 axles</u>
The maximum weight, here is 80000.
So, the inequality is:

<em>See attachment for the graphs of each inequality</em>
Read more about inequalities at:
brainly.com/question/11612965
 
        
             
        
        
        
∵ ΔSRQ is a right triangle 
and RT⊥SQ
∴ x² = ST * TQ
∴ x² = 9 *16 = 144
∴ x = √144 = 12