Answer:
where is m?
Step-by-step explanation:
Answer:
8
Step-by-step explanation:
Remember: Keep, Change, Flip
keep 4 the same, change the division to multiplication, and flip the fraction from 1/2 to 2
4 x 2=8
Answer:
5
Step-by-step explanation:
To obtain the total score for all the 20 students, we multiply the average score by the number hence
Total score for all 20 is 81*20=1620
Similarly, for the 19 students, the sum of their total score equals the product of the average and number of students hence
Total score for 19 readable is 19*85=1615
The difference between these two total scores ie for 20 and 19 students equals to the value of unreadable score. Therefore,
Difference=1620-1615=5
Therefore, the value of unreadable score is 5