A vertical line is represented by x = a number
so ur vertical line is : x = 4 <==
** and just so u know, a horizontal line is represented by y = a number.
        
                    
             
        
        
        
I don’t know how to do this type stuff so sorry hope someone els can help u tho
        
             
        
        
        
It's an expression that can be simplified to read
       ( 0.7  x  0.4 ) ( b³  x  b⁹ )
   =  (      0.28    )  (    b¹²      )  =  0.28 b¹² .
        
             
        
        
        
Let 

. Then 

, and so as 

, you have 

. The limit is then equivalent to
 
 
        
        
        
<h3>Explanation:</h3>
1. PQ║TS, PQ ≅ TS, PT and QS are transversals to the parallel lines . . . given
2. ∠P ≅ ∠T . . . alternate interior angles at PT
3. ∠Q ≅ ∠S . . . alternate interior angles at QS
4. ΔPQR ≅ ΔTSR . . . ASA postulate
_____
You can use any pair of angles together with the sides PQ and TS. If you use the vertical angles and one of ∠T or ∠S, then you must invoke the AAS postulate for congruence, as the side is not between the two angles.