The ratio of boys to girls in math class is 4 to 5. How many girls are in the class if there are 16 boys in the class?

(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.

Tell whether the two rates form a proportion

How do you write 0.5% as a fraction