stunnakid9094
06.04.2020 •
Mathematics
What number added to the number set would result in a mean score of 5? 10, 5, 3
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Ответ:
Mean is the average.
For 4 scores to have an average of 5, the total points would need to equal 5 x 4 = 20
the total of the first 3 scores is: 10 + 5 + 3 = 18
The final score would need to be 20-18 = 2
Ответ:
robin=5+l
jose=9+5+l
23=14+l
l=9
r=5+9=14
Robin has 14 books and Lee has 9