How do you write 77/20 in a decimal

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.

What are the exclude value of mn+3m

(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.