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Do Homework-Tammy Holly Google ahrome oou Secure l https//wwwmathodcom/Student/playerHomework aspethomeworkld 4252 &flushed; false acld 4447s83&centenwin; yes MAT144-College Mathematics Section 503-Sumare 4-10-17 Save Homework: Module 3 Homework (unlimited attempts) Score: 0 of 1 pt HW Score: 53%, 1325 of 25 pts 3.2.4 Question Hep According to modem science, Earth is about 45 bilion years old and written human history extends back about 10.000 years, suppose the entie history of Eathis 0meter ong timeline, with the birth of Earth on one end and today atthe other end represented with a a. What distance represents 1 billion years? b How far from the end of the timeline does written human history begin? bason years represented by (ype an integer or decimal rounded to the nearest tenth as needed) Enter your answer inthe answer box and then clckCheck Answer

Explanation / Answer

1 billion = 109 years

10,000 years = 104 years

104 years are represented with 10 meters long time line.

109 years are represented with x meters long time line.

104/10=109/x

x=109 * 10/104 = 106

1 billion represented with 106 meters long timeline

4.5 billion represented with 4.5 * 106

(4.5 * 106 - 10) meters from the start is where the written human histry begins.

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