If a+ -76 = 480 then what is the value of a

What is the solution of sqrt x+2-15=-3

Create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1.

(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.