Answer:
Step-by-step explanation:
i think 45 because a square could be broken up into 4s
 
        
                    
             
        
        
        
Answer:
x  ≈ 10.7 ft.
Step-by-step explanation:
Given triangle in the picture is a right triangle. 
By applying Pythagoras Theorem in this triangle.
(Hypotenuse)² = (Leg 1)² + (Leg2)²
(14)² = x² + 9²
x² = (14)² - 9²


x = 10.72
x  ≈ 10.7 ft.
 
        
             
        
        
        
Answer:
-2
Step-by-step explanation:
if x=- 2  then f(x)=(-2-5)3(-2+2)=0
so x=-2 is correct
 
        
             
        
        
        
There is only one solution to the equation.  A quadratic equation has 2 solutions a positive and a negative, but since we are looking for length, the answer can only be postive.  Area= side^2
               400= x^2
          sqrt(400)=x
           20 inches = x  
The length of one side is 20 inches
check: 20*20 = 400, which is the area of the square painting.
 
        
             
        
        
        
Answer:
Box of Popcorn: $3.00 
Drink: $2.00 
Step-by-step explanation:
If we input the prices into the original problem it would be something like this, (2)3.00 + (3)2.00 = $12.00 (3+3 = 6 and 2 + 2 + 2 = 6 6+6= 12) Or 2x + 3x = $12
And you would do the same thing for the second one. 
(3)3.00 + (5)2.00 = $19.00 ( 3 + 3 + 3 = 9 and 2 + 2 + 2 + 2 +2 = 10 10+9= 19) Or 3x + 5x = $19 
Sorry if it's incorrect but i hope it helps!