#12:
p= 2.8y+2.2y+2x+5x+4x
p= 5y+11x
#14:
p= 2h+2h+4j+4j+4j+4j
p= 4h+16j
        
             
        
        
        
Answer:
Step-by-step explanation:
 
        
             
        
        
        
Answer:
-18 = -18  It is true.
Step-by-step explanation:
-6 -1.5(4b+8) = 3(-6 -2b)
  -6   -6b - 12 = -18 -6b
       -6b -18    = -18 -6b
        +6b                 +6b
             -18   =  -18
               It is true.
 
        
             
        
        
        
Answer:
(x-8)(x+7)
Step-by-step explanation:
using quadratic formula we have
x=  
we have:
x^2-x-56=0
a= 1 b=-1 c=-56
so we have:
x=(-(-1)+-sqrt(1^1-4*(1)*(-56)))/(2*1)
x=1+-sqrt(1-4*(-56))/(2)
x=(1+-sqrt(225))/2
x=(1+-15)/2
so we have the roots:
x1=(1+15)/2 =8
x2=(1-15)/2=-7
so the answer is (x-8)(x+7)
 
        
                    
             
        
        
        
Standard Normal Distribution. As discussed in the introductory section, normal distributions do not necessarily have the same means and standard deviations. A normal distribution with a mean of 0 and a standard deviation of 1 is called a standard normal distribution.