clay69
26.09.2019 •
Mathematics
Cafeteria meas sow lo graders i m may meals \ tu-sum ‘ ,, w ‘ friday 1 )7 if the mean number of meals for an 5 days was 69, how many meals did the cafeteria sen on friday a 5.1 : there are 5 tamika's group 8 ma ~ made by the hangup on the test was 85 the stores “ s * students are shown c =
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Ответ:
x=number of meals that the cafetery sold in Friday.
aritmetic average=69
number of days=5
69=(64+71+73+60+x) / 5
69=(268+x) / 5
69*5=268+x
268+x=345
x=345-268=77
C. 77 meals.
Ответ:
Remember: "5 or more raise the score, 4 or less let it rest"
56 estimation up 60
27 estimation up 30
Then you do the equation:
60 * 30 = 1800