Concept explainers
Find the score on a fifth test.
Answer to Problem 13WE
Explanation of Solution
Given information:
Given scores,
Calculation:
The average of five scores will be the sum of all scores divided by number of scores.
It is given that the average test score is
Multiply both sides with
Subtract
Hence, the person scores
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Algebra and Trigonometry: Structure and Method, Book 2
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