Trisha is solving x2 + 16x = 9 by completing the square. Which of the following describes
what her first step should be?
A. Add 16 to both sides of the equation.
B. Subtract 9 from both sides of the equation.
C. Take the square root of 9.
D. Add 64 to both sides of the equation.

This is about circle theorems. someone asap : (

(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.

Find the distance between (7,-6) and (-3,-9)