Answer:
3 feet
Step-by-step explanation:
 
        
                    
             
        
        
        
What number, when five is subtracted from it equals twelve
        
             
        
        
        
Answer: Probably A
Step-by-step explanation: You need to use a ruler for this, because without one its impossible to get it exact
Using the ruler though, you'd measure each side of the wall and either use a ratio of 0.5in:4ft or multiply every 0.5in by 4ft.
 
        
             
        
        
        
Answer:
The factors of given polynomial    x =-1 , -2 and x =3
Step-by-step explanation:
<u><em>Step(i):</em></u>-
Given the polynomial  
                     f(x) =  x³ - 7x -6
  put x =-1 
                f(-1) = (-1 )³- 7(-1) - 6 = -1+7-6=0
(x+1) is a one factor
By using synthetic division
                    x³    x²      x      constant
      x=-1  ↓   1      0      -7        -6
              <u>↓   0     -1      1          6</u>
             <u>       1       -1      -6       0     </u>
<u />
<em>The polynomial    x² - x - 6 </em>
<u><em>Step(ii):-</em></u>
The factors ( x+1)(x² - x - 6 ) = 0
      x = -1 and x² - x - 6 =0
     x =-1    and  x² - 3x + 2 x - 6 =0
    x =-1     and  x (x -3) + 2( x-3) =0
    x =-1     and  (x+2)(x-3) =0
<u><em>Final answer:-</em></u>
The factors of given polynomial    x =-1 , -2 and x =3
 
        
             
        
        
        
Answer:
it's part of the real number system
it's a rational number 
it's an integer
Step-by-step explanation: