Mathematics, 13.11.2020 06:20 blaze9889t
2. Mary's test average after 8 tests is 80. Her score on the
9th test was 71. If all 9 tests are weighted equally, what
is Mary's test average for all 9 tests?
A. 71
B. 75.5
C. 77
D. 79
E. 80
Answers: 1
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2. Mary's test average after 8 tests is 80. Her score on the
9th test was 71. If all 9 tests are we...
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