60% of 20 quizzes = 60/100*20 quizzes = 12 quizzes
Amount of quizzes remaining = 50 quizzes - 20 quizzes = 30 quizzes
He passes 80% of those 30 quizzes, so
80/100 * 30 quizzes = 24 quizzes
So, he passed 12 quizzes from the initial bunch and 24 quizzes from the rest, which totals to 12 quizzes + 24 quizzes = 36 quizzes.
Then, you see that he passed 36 quizzes, out of the total 50 quizzes, so the ratio is 36 quizzes / 50 quizzes = 36/50, which when converted as a percentage is 36/50 * 100% = 72%.
Therefore, he passed 72% of the quizzes for the entire year.
 
        
             
        
        
        
Answer:
x²+y²=13
Step-by-step explanation:
any circle with center at (0,0)
is of the form
x²+y²=r²
find out r²
r² = (2²+3²)=13
so the answer
 
        
             
        
        
        
Answer: d.=28 The last one 
Step-by-step explanation:
3.3=9 +5 =14 x 2 =28
 
        
             
        
        
        
Answer:
<u>note:</u>
<u><em>solution is attached in word form due to error in mathematical equation. furthermore i also attach Screenshot of solution in word due to different version of MS Office please find the attachment</em></u>
 
        
             
        
        
        
Answer:
four hundred seven thousand two hundred nineteen
Step-by-step explanation: