Which fraction does not belong with the other three? 1/2, 2/12, 3/12, 4/12

Jose predicted that he would sell 48 umbrellas. he actually sold 72 umbrellas. what are the values of a and b in the table below? round to the nearest tenth if necessary

The trigonometric ratios sine and secant are reciprocals of each other

Aconstruction worker has rope 9 m long he needs to cut it in pieces that are each 3 /5 m long how many such pieces can he cut without having any rope leftover?