What mathematical operation is used to isolate the variable X in the equation?
Averaging Test Grades
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Social Studies, Mathematics
•
11th Grade - University
•
Hard
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The video tutorial explains how to calculate the score needed on a fifth test to achieve an average of 80% across five tests. It begins with an introduction to the problem, followed by a detailed explanation of how averages are calculated. The instructor sets up an equation to find the unknown score and solves it step-by-step. The tutorial concludes with a verification of the solution, ensuring the calculated score is correct.
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2 questions
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1.
OPEN ENDED QUESTION
3 mins • 1 pt
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2.
OPEN ENDED QUESTION
3 mins • 1 pt
What does Billy need to score on the fifth test to ensure he meets or exceeds the required average?
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