Evaluate the expression.
- 15 +5-9=

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

Write the sine and cosine values of a, b, respectively, in the figure for (1) and (2) + explanation.

(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.