Karen says every equilateral triangle is acute. is this true explain

(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.

A10 inch cookie cake is divided into 8 slices. what is the area of 3 slices

V=x^4-y^4 pick three expressions that can represent the three dimensions of the prism (each in meters)