Answer:
83.4% or 83%
Step-by-step explanation:
when trying to find a percent, divide the numerator (# of correct answers) by the denominator (# of total questions possible to get correct)
Which would be 16.67 divided by 20 which equals .8335. Move the decimal point over two placements which would be 83.35. I rounded it up to 83.4. If trying to find a whole number not a decimal it would be 84%. Depending on the grading scale, it would be a B. 
 
        
             
        
        
        
Answer:
2/3*(7/4)=7/6 hours
Step-by-step explanation:
 
        
             
        
        
        
9×8-29+30/15-15 equals 30
        
             
        
        
        
The answer is A) -4/25 because when you multiply 8/15 and -3/10, you can simplify the expression to 4/5 times -1/5, which equals -4/25.  
        
                    
             
        
        
        
The first two rows of coefficients are identical, so by inspection, the determinant is 0.