Step-by-step explanation:
Take the number as x
12x-40=7x+25
collect like terms
12x-7x=25+40
5x=65(divide both sides by 5)
x=13
Therefore number is 13
 
        
             
        
        
        
Answer:
there ain't nun to answer here 
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
h = 1.403733341286
Step-by-step explanation:
17.
the triangle of sides ‘l’ and ‘l-h’ is a right angled triangle.
Then

Then

Then

18.
For l = 6  and  θ = 40 :

   = 6-6cos(40)
   = 1.403733341286
 
        
             
        
        
        
Answer:
it is odd i think
Step-by-step explanation: