What is 28-0.3=0.7-12

Complete the solution of the equation. find the value of y when x equals to 6 4x+y=20

Find the values of the variables in the kite

(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.