If 2 times a number is decreased by 5 the results is 7 find the number

In the diagram, the ratio of ab to ae is (1/2) . what is the ratio of the length of to the length of ?

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High schoolmathematics 5 points keith is the leading goal scorer for a team in an ice hockey league. last season, he scored 42 goals in 82 games. assuming he scores goals at a constant rate, what is the slope of the line that represents this relationship if the number of games is along the x-axis and the number of goals is along the y-axis?