Answer:
7x^16. Step-by-step solution in the attachment.
 
        
             
        
        
        
 The answer to question 1 is 25\12
        
             
        
        
        
Answer:
2(2x+5)
Step-by-step explanation:
Length of the rectangle=l= 3x
Breadth of the rectangle=b= 5
Perimeter= 2(l+b)
= 2(3x+5)
 
        
             
        
        
        
Let x represent the smallest angle. Then the largest is 3x, and the remaining angle is 180-4x. The problem statement tells us
.. 3x > 180 -4x > x
Adding 4x gives us
.. 7x > 180 > 5x
or
.. 36 > x > 180/7 = 25 5/7
The angles, smallest to largest, are
.. x, 4(45 -x), 3x
where 25 5/7 < x < 36
The angles could be, for example, any of ...
.. 26°, 76°, 78°
.. 30°, 60°, 90°
.. 32°, 52°, 96°
.. 35°, 40°, 105°
and an infinite number of other possibilities.
        
             
        
        
        
Answer:
20% 
Step-by-step explanation:
12 bottle is 60 rupees 
each sold 6 ruppes 
so 12 bottle cost 72 ruppes 
12*100/60 = 20%