Answer: 
1. 25%
2. 150%
3. 3%
4. 75%
5. 60%
6. 210%
7. 10% 
8. 1%
9. 40%
10. 87.5
11. 105%
12. 2%
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
Approximate of error = 11.11 % (Approx.)
Step-by-step explanation:
Given:
Exact value = 50
Approximate value = 45
Find:
Approximate of error
Computation:
Approximate of error = [(Exact value - Approximate value)/Approximate value]100
Approximate of error = [(50 - 45)/45]100
Approximate of error = [(5)/45]100
Approximate of error = [0.11111]100
Approximate of error = 11.11 % (Approx.)
 
        
             
        
        
        
9514 1404 393
Answer:
   x +4y = -5
Step-by-step explanation:
The equation of the perpendicular line can be found by swapping the x- and y-coefficients and negating one of them. The new constant can be found by substituting the point values into the equation.
   3x +12y = 3(-5) +12(0)
   3x +12y = -15
We notice that all of the values include a factor of 3. We can divide that out to put the equation in standard form:
   x + 4y = -5
 
        
             
        
        
        
Distance between -4 and -3 is 1 and there is no distance between 0
        
                    
             
        
        
        
Tan(angle) = opposite leg/ adjacent leg
Tan(30) = x/22
X = 22 * tan(30 ) 
X = 12.701 feet.
Round as needed