The answer is 9 by the way. Draw a circle with sixty slices, shade in 15% or 9 slices.
        
             
        
        
        
Answer:
x = 2
Step-by-step explanation:
4x +4=12
     -4.   -4
    4x.= 8
  divide both saide by 4
 x. = 2
 
        
             
        
        
        
Answer:
x = -2.5
Step-by-step explanation:
Step 1: Write equation
-6.2 - 12.6x = 5.8 - 7.8x
Step 2: Solve for <em>x</em>
<u>Add 12.6x on both sides:</u> -6.2 = 5.8 + 4.8x
<u>Subtract 5.8 on both sides:</u> -12 = 4.8x
<u>Divide both sides by 4.8:</u> x = -2.5
Step 3: Check
<em>Plug in x to verify if it's a solution.</em>
-6.2 - 12.6(-2.5) = 5.8 - 7.8(-2.5)
-6.2 + 31.5 = 5.8 + 19.5
25.3 = 25.3
 
        
             
        
        
        
Answer:
x = 
Step-by-step explanation:
Given
 x -
 x -  =
 = 
Multiply through by 10 ( the LCM of 5 and 10 ) to clear the fractions
8x - 1 = 3 ( add 1 to both sides )
8x = 4 ( divide both sides by 8 )
x =  =
 = 
 
        
             
        
        
        
Answer:
Option A. 
Step-by-step explanation:
we know that
A perfect square trinomial is equal to

In this problem we have

equate the equations and solve for a

so


therefore
the perfect square trinomial is equal to 