If y varies inversely as x and y=2/5 when x=1/20
1, find y when x=1/2

Which graph represents the function g(x) = |x + 4| + 2?

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

(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.