Which sequence is geometric and has 1/4' as its fifth term and 1/2' as the common ratio?
O A..., 1,' 1/2, 1/4, 1/8"...
B..., 1/4, 1/2,' '1, 2, ...
OC..., 1872, -1/36','1/18", 19 ...
D, 8,' '4,' '2' 1,' ...

Ihave trouble finding the nth term of a linear sequence

5. which description does not guarantee that a quadrilateral is a squar ajo is a parallelogram with perpendicular diagonals 0% has all sides congruent and all angles congruent o has all right angles and has all sides congruent 10% is both a rectangle and a rhombus 30%

Ineed to know how to write question one in mathematical terms