Answer:
7. 2:3<__4:1
8. 1:2<__3:6
9. 3:5>__2:4 
10. 6:7>__4:8
Step-by-step explanation:
 
        
             
        
        
        
Answer:
yes
Step-by-step explanation:
22/13 =1.69≈3.2
13/4 = 3.2
 
        
             
        
        
        
Step-by-step explanation:
5x-3y-4=0---------(1)
Slope = - coefficient of X/ coefficient of y
 = -5/(-3)
 = 5/3
(x1,y1)= (-5,7)
Equation of the line, 
Y-Y1= slope(X-X1)
Y-7= (5/3)×(X-(-5))
Y-7= (5x+25)/3
3y-7=5x+25
5x-3y+32=0 is the required eqn
 
        
             
        
        
        
<h2>-2+5i and 2+5i</h2>
Step-by-step explanation:
    Let the complex numbers be  .
.
Given, sum is  , difference is
, difference is  and product is
 and product is  .
. 
 ⇒
 ⇒ 
 ⇒
 ⇒ 


Hence, all three equations are consistent yielding the complex numbers  .
.