Use a calculator to evaluate 8 · cos30° rounded to four decimal places. 6.9282
1.2340
-7.9043
-0.50

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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?

Evaluate 8j -k+148j−k+14 when j=0.25j=0.25 and k=1k=1.

Find the common ratio of the sequence. -4, 8, -16, 32, a: -12b: -2c: 12d: -1/-2