bvghchg2580
15.10.2019 •
Mathematics
M/_ a =50
m/_acb =85
answer blank 1 : /_adc
answer blank 2 : /_ cdb
answer blank 3 : /_ acd
answer blank 4 : /_ bcd
answer blank 5 : /_ b
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Ответ:
where x+y=30
20 Hard covers = $400
10 Paper Backs = $80
80 + 400 = 480