Answer the word problem:

taylor and blair are driving away from each other in opposite directions. if blairs speed is 70mph and taylors speed is 80mph, how many hours will it be before the two are 225 miles apart?

(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.

Aadc is formed by reflecting aabc across line segment ac, as shown in the figure. if the length of ac is 4 units, the area of aadc is square units.

Find the value of x to the nearest tenth.