Answer:
(x+7) (x+3)
Step-by-step explanation:
x times x equals x2
3x + 7x = 10x
7 x 3 = 21
(x+7) (x+3)
 
        
             
        
        
        
Answer:
 (d)  y= (1 1/9)x
Step-by-step explanation:
A proportional relation is described by the equation ...
  y = kx
Dividing by x shows how to find the value of k:
  k = y/x
For the given values of y and x, the value of k is found to be ...
  k = (5/6)/(3/4) = (5/6)(4/3) = 20/18 = 10/9 = 1 1/9
The relationship is represented by the equation ...
  y = (1 1/9)
 
        
             
        
        
        
Answer:
45 is the answer
Step-by-step explanation:
first you have to know the sum of interior angle of that pentagon (540)
then add the all angle. 
148 + x + 112 + 90 + 3x + 10 = 540. 
or, 360 + 4x = 540
or, 4x = 540 - 360
or, 4x = 180
or, x = 180/4
or, x = 45
hope it will help you☺✌
 
        
                    
             
        
        
        
Scale factor is 2
30/15 = 2
20/10 = 2