I always make sure my hand brake is on
        
             
        
        
        
Answer:
Step-by-step explanation:
AB = 8x + 5
BC = 5x² - 16
5x² -  16 = 8x + 5
5x² - 8x - 21 = 0
Quadratic formula
x = [8 ± √(8² – 4·5(-21))] / [2·5]
 = [8 ± √484] / 10
 = [8 ± 22] /10
 = -1.4, 3
-1.4 is an extraneous solution.
x = 3
AB = 8x+5 = 29
AC = 58
 
        
             
        
        
        
Answer: x=-65
Step-by-step explanation:
Solve for x by simplifying both sides of the equation, then isolating the variable.
 
        
                    
             
        
        
        
Answer:
The radius of the aquarium tank is 
Step-by-step explanation:
we know that
Applying the Tangent Secant Theorem

we have that


substitute


Solve for D



Find the radius
The radius is half the diameter
