Answer:
35
Step-by-step explanation:
You have to divide 280 by 8 and that's how you get it.
 
        
             
        
        
        
2x+3-x+5
x+8 is the simplified answer.
Hope this helps!! 
        
                    
             
        
        
        
Answer:
The value of n is 5 
Step-by-step explanation:
Here, we want to get the value of n 
To get this, we will need to use the appropriate trigonometric identity 
As we can see, n represents the opposite as it the side that faces the angle given 
m is the hypotenuse as it is the side that faces the right angle 
The last side is called the adjacent 
The trigonometric identity we want to use is that which connects the opposite to the adjacent 
The appropriate trigonometric identity to use in this case is the tan 
Thus;
Mathematically, the tan is the ratio of the opposite to the adjacent 
hence;
tan 30 = n/ 5 √3
n = 5 √3 * 1/ √3
n = 5 
 
        
             
        
        
        
Total pressure is constant and PT = P = 1/2*ρ*v^2
So p1 + 1/2*ρ*v1^2 = p2 + 1/2*ρ*v2^2 and from continuity we have ρ*A1*v1 = ρ*A2*v2
So v2 = v1*A1/A2 since r2 = 2r1 then A2 = 4A1
so v2 = v1/4
Now from above p2 = p1 + 1/2*ρ*v1^2 - 1/2*ρ*v2^2 = p1 + 1/2*ρ*v1^2 - 1/2*ρ*v1^2/4^2
So p2 = 3.0x10^4Pa + 1/2*1000kg/m^3*(12m/s)^2 - 1/2*1000kg/m^3*12^2/16
= 9.75x10^4Pa = 9.8x10^4Pa
        
             
        
        
        
Answer:
This is the answer. All the very best. Do it