thesnackygrahap4etix
20.10.2020 •
Mathematics
Anna completes a test that had 120 questions for a math competition. Each correct answer is worth +4 points, and each wrong answer is worth -2 points. Anna finishes the entire test and receives a score of zero. How many correct and incorrect answers did she have
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Ответ:
A.
Step-by-step explanation:
1.
1/2 = - 3/2 + 2
1/2 = - 3/2 + 4/2
1/2 = 1/2
2.
1/2 = 3 x 3/2 - 4
1/2 = 9/2 - 4
1/2 = 9/2 - 8/2
1/2 = 1/2