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7. Each year a tree grows 5 cm less thanitdid the preceding year. If it grew by 1 min the first year, in how many years willit have ceased growing? |
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Answer» an Arithmetic progression(AP) isa sequence of numbers in which each differs from the preceding one by a constant quantityinwhich a(first term) = 100 cmd(common difference) = -5cmAn(nth term) = 0cmn = ?thereforeAn = a + (n-1)d0 = 100 -5n + 5-105 = - 5n21 = nhence in the 21 st year the tree will stop growing Like my answer if you find it useful! |
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