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The fourth term in an arithmetic sequence is 18 and the seventh term is 39. If the first term is a, which is an equation for the nth term of this sequence?
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In the pendulum formula t=2pi. read the problem on the picture ! ; $; $; ! ; ! ; ! ; )$; ! ; ! ; ! ; $; $; $! ; ! ; ); $; $$
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Quadrilateral abcd in the figure below represents a scaled-down model of a walkway around a historic site. quadrilateral efgh represents the actual walkway. abcd is similar to efgh. what is the total length, in feet of the actual walkway?
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The fourth term in an arithmetic sequence is 18 and the seventh term is 39. If the first term is a,...
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