Answer:
x=4- , x=4+
, x=4+
Step-by-step explanation:
(x^2-8x+16)-16-7=0
(x-4)^2=23
x=4- , x=4+
, x=4+
 
        
             
        
        
        
X= one ride ticket 
12x+7=31
      -7    -7
     12x  =  12x
      ---        ---
      12       12
x=2 
$2
        
             
        
        
        
5. the first equation gives you the value of y. So plug in the value of y into the second equation: 
3x+2(-x-7)=3. 
Simplify: 3x-2x-14=3.
Subtract: 1x-14=3. 
Add 14 to both sides: x=17.
Now you know the x value.
You plug in the x value into the first equation: y=-17-7
Solve: y=-24
Answer: 17, -24
        
                    
             
        
        
        
Answer:
the area of 60ft is 60. :]
Step-by-step explanation:
 
        
             
        
        
        
Answer:
My vote is for choice 3) ∠2, ∠3, ∠6 and ∠7
Step-by-step explanation:
Each of 2,3,6, & 7, when added to angle 5, add up to 180°
Do supplementary angles have to be adjacent to be supplementary?
No.
Explanation:
The answer is no, as for example:
angles on the same side of a non-parallel sides of a trapezoid and
opposite angles of a cyclic quadrilateral can be supplementary.