According to modern science, Earth is about 4.5 billion years old and written human history extends back about 10,000 years. Suppose the entire history of Earth is represented with a 100-meter-long timeline, with the birth of Earth on one end and today at the other end.

a. What distance represents 44 billion years?

b. How far from the end of the timeline does written human history begin?

a. 44 billion years is represented by

meters of the timeline.

(Type an integer or decimal rounded to the nearest tenth as needed.)

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