Answer:
A.) 20
Step-by-step explanation:
These angles are complementary meaning they add up to 90°.
4x - 10 + x = 90
5x - 10 = 90
5x = 100
x = 20
 
        
                    
             
        
        
        
X = number of sweaters
175 - 55 > 12X
120 > 12X
10 > X
the most amount of sweaters he can buy is 10
        
             
        
        
        
Answer:
Step-by-step explanation:
it is incorrect at step 3
it should be 12*10^(9-5)
=12*10^4