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Mathematics, 21.06.2019 18:30
Three times the sum of a number and seven is negative thirty-six. what is the number?
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Mathematics, 21.06.2019 21:00
When george started his current job, his employer told him that at the end of the first year, he would receive two vacation days. after each year worked, his number of vacation days will double up to five work weeks (25days) of payed vacation. how many vacation days will he have in 4 years
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Mathematics, 21.06.2019 21:40
Use sigma notation to represent the following series for 9 terms.
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