he has as many five-dollar bills as one-dollar and ten-dollar bills combined. the sum of four times the number of one-dollar bills and twice the number of ten-dollar bills is one more than three times the number of five-dollar bills. how many of each kind of bill does he have?翻译...
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Wide‐neck is defined as having a neck width ≥4mm or a dome‐to‐neck ratio <2. The effectiveness of this device for this use has not been demonstrated. 2 EU only, not available in the USA ...