Answer:
Fractional form of 2.5 is 5/2.
5.4 as a fraction is 27/5.
 
        
             
        
        
        
5x²+y²=3
by implicit differentiation we shall have:
10x+2yy'=0
the second derivative will be:
10+2y"=0
2y"=-10
y"=-5
        
             
        
        
        
Answer:
124.12 pounds
Step-by-step explanation:
42.8 x 2.9
= 124.12
= 124.12 pounds
 
        
             
        
        
        
Answer:
30.11 meters ( approx )
Step-by-step explanation:
Let x be the distance of a point P ( lies on the building ) from the top of the building such that AP is perpendicular to the building and y be the distance of the building from point A, ( shown in the below diagram )
Given,
Point A is 8.20 m above level ground,
So, the height of the building = ( x + 8.20 ) meters,
Now, 1 degree = 60 minutes,
⇒ 


By the below diagram,




Now, again by the below diagram,



Hence, the height of the building = x + 8.20 = 30.11 meters (approx)