By Pythagoras Theorem,
Length= (20^2 - 15^2)^0.5= (175)^0.5=5√7
        
             
        
        
        
The answer is 2x-3, you multiply the x value by 2 and then subtract 3 which gives you your y value
        
             
        
        
        
Answer:
If rounding up it is 1
Step-by-step explanation:
the nearest whole number is 1.
 
        
                    
             
        
        
        
First divide by 4 to get x^2=9. Then take the square root of both sides. x=3 and x = -3.