10. Find the width of the canyon.
13.
width = ?
22 m
15 m
160 m
I need help asap

In the diagram, the measure of angle 9 is 85° which angle must also measure 85°?

(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.

Use sigma notation to represent the following series for 9 terms.