(-2 = √x - 7)x² (calculate)
(-9 = √x)x² (remove the parantheses)
-9x² + √x x² 
 
        
             
        
        
        
Answer:
The finish line
Step-by-step explanation:
Jonas is planning his trip using the finish line as reference point. He is using an interval scale (using meters as measurement) and the finish line = 0 meters or the starting point. Anything before the finish is negative and anything after is positive. In this case, his wife is located at 91 + 14 = 105 meters away from him. When you use an interval scale to measure distance, you must use absolute values to determine the distance because positive and negative points.  
 
        
             
        
        
        
Answer:
57.5
Step-by-step explanation:
2x+65=180
 -65 -65
———————
 2x = 115
 —— ——
 2 2
 x = 57.5
 
        
                    
             
        
        
        
Answer: The center is 0,4
Step-by-step explanation:
Use this form to determine the center and radius of the circle:
 (
x-h)^2+(y-k)^2=r^2
Match the values in this circle to those of the standard form. The variable  r  represents the radius of the circle,  h  represents the x-offset from the origin, and  k  represents the y-offset from origin:
r=8
h=0
k=4
The center of the cirle is found at (h,k): (0,4) 
The radius is 8