Luis wants to buy a skateboard that usually sells for $79.80. all merchandise is discounted by 12%. what is the total cost of the skateboard if luis has to pay a state sales tax of 6.25%. round your intermediate calculations and answer to the nearest cent.

How can you construct perpendicular lines and prove theorems about perpendicular lines

Simplify -4z+2y-y+-18z a.-22z+y b.-14z+2 c.3y+22z d.y +14z

(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.