Four girls run a relay and finish the race in 6.48 minutes if each girl ran at the same speed how many minutes did each girl run? Round to the nearest tenth.

Solve by any method (graphing, substitution or linear combination)y = x - 82x + 3y = 1a) (2, -6)b) (5, -3)c) (4, -4)d) (0, -8)i figured it out. the answer is (5, -3)

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.

What is the area of the shaded sector?