Answer:3
Step-by-step explanation:
Round 3.38 to the nearest ten
Rounding up to the nearest 10, we look at the digits on the left hand side of the decimal point. If the number on the right of the decimal point is less than 5, we ignore it.if it is greater than 5, we add one to the last digit on the right hand side. 
In this case, the first digit on the left hand side is less than 5, so we ignore it. Rounding up to the nearest ten,the 0.38 is ignored.
Therefore, it becomes 3.0 = 3
To the nearest ten
 
        
             
        
        
        
You would multiply by -4/3. That's cuz to get to 1, you have to cancel out the negative, with another negative. You then have to multiply by the reciprocal. 
Hope this helps! 
        
             
        
        
        
Answer: 49°
Step-by-step explanation:
I'm guessing you meant complement?  Complementary angles add up to 90°.  90° - 41° = 49°
 
        
             
        
        
        
22's answer is because they're alternate