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dchirunga23
14.01.2020 •
Mathematics
Javier needs to earn at least an 80 in college algebra only exam scores are used to calculate his grade currently he has scored a 73,71 and 82 this semester with the semester exam counting twice what is the minimum score needed on the semester exam to earn an 80 or
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Ответ:
The minimum score needed on the semester exam to earn an 80 by Javier is 87.
Step-by-step explanation:
The scores he has scored in the papers = 73, 71 and 82
Let us assume the score Javier scores in the semester exam = p
The average of the total marks = 80
Now , as semester exam is counted TWICE:
The total of all the marks obtained by Javier = 73+ 71 + 82 + p + p
= 226 + 2p
Now, the average marks of 5 papers
=![\frac{\textrm{Sum of total marks of 5 papers}}{{5}} = \frac{226 + 2p}{5}](/tpl/images/0454/7027/c546a.png)
But the average here is given to be 80.
or, p = 87
Hence, the minimum score needed on the semester exam to earn an 80 by Javier is 87.
Ответ: