Asked by Debbie
a student’s grade in a class is simply the mean of five 100-point
exams
a. If the student has grades of 77, 73, 97, and 89 on the first four exams, what is the
students’ grade before taking the last exam?
b. What is the lowest score that the student can earn on the last exam to get an B (80) in the
course?
exams
a. If the student has grades of 77, 73, 97, and 89 on the first four exams, what is the
students’ grade before taking the last exam?
b. What is the lowest score that the student can earn on the last exam to get an B (80) in the
course?
Answers
Answered by
Ms. Sue
(77 + 73 + 97 + 89)/4 = ?
(77 + 73 + 97 + 89 + x)/5 = 80
(77 + 73 + 97 + 89 + x)/5 = 80
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