Answer:
Given equation are:
 ......[1]
                  ......[1]
 .....[2]
                             .....[2]
- The two lines are parallel lines then their slopes will be equal.
- When two lines are perpendicular then, the slope of lines are the negative reciprocals of each other.
Now, Equation of a line is in the form of y =mx+b where m is the slope of the line.
Slope of equation of line in [1] is;
 of equation of line in [1] is;
 
   
then;

Slope of equation of line in [2];
 of equation of line in [2];
 
 
Add both sides 2x we get;
-2x + 8y + 2x = 2x + 4
Simplify:
8y = 2x +4 
Divide both sides by 8 we get;

then;

Therefore, the given two lines are neither parallel nor perpendicular.
 
        
             
        
        
        
Answer:
The height of right circular cone is h = 15.416 cm
Step-by-step explanation:
The formula used to calculate lateral surface area of right circular cone is: 
where r is radius and h is height.
We are given:
Lateral surface area s = 236.64 cm²
Radius r = 4.75 cm
We need to find height of right circular cone.
Putting values in the formula and finding height:

So, the height of right circular cone is h = 15.416 cm
 
        
             
        
        
        
Answer:
Yes they are. 
They are congruent because they have two equal angles and one equal side 
 
        
             
        
        
        
Answer:
Slope = 1
Step-by-step explanation: