Answer:
3-6=3
Step-by-step explanation:
 
        
             
        
        
        
Solve the top equation for x and then substitute that into the bottom equation and solve for y:
Top equation: subtract 4 from both sides to get x = y - 4
Substitution and simplify:
y = 4(y - 4) - 10
y = 4y - 16 - 10
y = 4y - 26
-3y = -26
y = 26/3 or 8 1/3 or 8.333 (those are all the same but in different forms)
        
             
        
        
        
57 minute will take to fill the tank.
Solution:
Height of the cylinder = 6 ft
Diameter of the cylinder = 6 ft
Radius of the cylinder = 6 ÷ 2 = 3 ft
Volume of the cylinder = πr²h
                                       = 3.14 × 3² × 6
Volume of the cylinder = 169.56 cubic feet
Time taken to fill 3 cubic feet of water = 1 minute
Time taken to fill 169.56 cubic feet of water =  
 
                                                                          = 56.52 minute
                                                                          = 57 minute
Hence 57 minute will take to fill the tank.
 
        
             
        
        
        
<u>Answer</u>
<em>The total displacement of the object is 320 m</em>
<u>Solution-</u>
From the formulas of mechanics,

Where,
s = displacement 
u = initial velocity = 0               ( ∵ As the body was in rest in the beginning )
t = time taken = 8 s
a = acceleration = -10 m/s²      ( ∵ -ve is because of the downward motion)
Putting all the values,
 ( ∵ -ve displacement means it is in downwards)
 ( ∵ -ve displacement means it is in downwards)
 
        
             
        
        
        
x+15
depends on the value of x