Step-by-step explanation:
part 1 : explaining how to get the coordinates of B
part 2 : the gradient of BD
If they do not have solutions (intersections).
If they do not have intersections then they must be parallel. Imagine it on the graph
Answer: 60
Step-by-step explanation:
Area = ½base × height
600 = ½b × 20
600/20 = ½b
Base = 30 × 2