Segment Addition Postulate (Algebra) Sep 14, 5:14:54 PM Point N is on line segment MO. Given MN =2× NO = x - 2, and MO = 2x + 9,
1 answer:
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Answer:
85.7
Step-by-step explanation:
Given that two sections of a class took the same quiz. Section A had 15 students who had a mean score of 80, and Section B had 20 students who had a mean score of 90.
Section A total score = 15*80=1200
Section B total score 20*90 = 1800
Overall total score=3000
Overall total students = 15+20 =35
Hence overall mean =
rounding off to one decimal place
overall mean = 85.7