Please, when you present a list of numbers, such as 4, 8, 16, ..., separate them with commas or semicolons:  4, 8, 16, ...
If x^2 + y^2 = 16, then 16 represents r^2, and r = 4.  r cannot be negative in this type of problem.
        
                    
             
        
        
        
A. (-2,3) because Rectangle ABCD is dilated by a scale factor of 1/2.
        
                    
             
        
        
        
Answer:
8
Step-by-step explanation:
-4x+8+2x
2x+8
compare both sides
2x+__= 2x+8
it is 8
 
        
                    
             
        
        
        
Hey there! :D
The congruence marks on the trapezoid make the angles congruent. This makes opposite angles supplementary. (Because all the angles in a trapezoid add up to 360 degrees)
12x-31+6x-5= 180
18x-36= 180
Add 36 to both sides. 
18x= 216 
Divide both sides by 18. 
x= 12
You can just plug that in to find m<H. 
6x-5
6(12)-5
72-5
m<H= 67
I hope this helps!
~kaikers
        
             
        
        
        
Answer:
Around 7830 dollars
Step-by-step explanation
Times 15,000 by 0.85, you'll get 12,750. Times each product by 0.85 and you'll get around 7830 dollars