Mathematics, 13.07.2019 16:30 andrejr0330jr

What is a31 of the arithmetic sequence for which a5=3.2 and a9=12.0?

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Mathematics, 22.06.2019 03:10, CM0

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Mathematics, 22.06.2019 03:30, waterborn7152

The length of a rectangular board is 3 feet less than twice its width. a second rectangular board is such that each of its dimensions is the reciprocal of the corresponding dimensions of the first rectangular board. if the perimeter of the second board is one-fifth the perimeter of the first, what is the perimeter of the first rectangular board?