Zacarias and paz together have $756.80. if zacarias has $489.50, how much does paz have? write and solve an addition equation to find how much money belongs to paz

Find dy/dx using implicit differentiation ln(20+e^xy)=y

Standard deviation of 19,29,21,22,23

(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.