X < 6
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6s+4d=$53
4s+6d=$47 
Multiply 6 in the first equation which is 
36s+24d=$318
Multiply -4 in the second equation which is 
-16s-24d=$-188
Then..
36s+24d=$318
-16s-24d=$-188
You cancel out the -24d and +24d 
36s=$318
-16s=$-188
Do the math..
20s=$130
Divide 20 by both sides and answer...
s=$6.5
 
        
             
        
        
        
Y= 3/4x - 2   (-2,10)= (x1,y1)
The slope is -4/3 of the perpendicular line:
Then:
y-y1=m(x-x1)
y-10=(-4/3)(x+2)
y=-(4/3)x -8/3 +10
y= -(4/3)x +22/3 (That's the answer)
        
             
        
        
        
The mode for this set of numbers is 18 because there are three 18's in the set of number, and only two 20's. :D
        
                    
             
        
        
        
Answer:
12
Step-by-step explanation:
The angle equals 90 degrees so (8*12-6) would equal 90
hopefully i helped