Ihave two questions -will the opposite of a positive number always, sometimes, or never be a positive number? -will the opposite of a number always, sometimes, or never be greater than the number itself? provide an example

If a baby uses 15 diapers in 2 days, how many diapers will the baby use in a year?

(c) the diagram shows the first three shapes of a matchsticks arrangement. first shape = 3second shape = 5third shape = 7given m represents the number of matchstick used to arrange the n'th shape.(i) write a formula to represent the relation between m and n. express m as the subjectof the formula.(ii) 19 matchsticks are used to make the p'th shape. find the value of p.

Tom can paint the fence in 12 hours, but if he works together with a friend they can finish the job in 8 hours. how long would it take for his friend to paint this fence alone?